diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 9a9c420df..0e94741ae 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -2921,112 +2921,6 @@ Style/HashTransformValues:
     - 'app/serializers/rest/web_push_subscription_serializer.rb'
     - 'app/services/import_service.rb'
 
-# Offense count: 176
-# This cop supports safe autocorrection (--autocorrect).
-Style/IfUnlessModifier:
-  Exclude:
-    - 'app/controllers/admin/domain_blocks_controller.rb'
-    - 'app/controllers/api/v1/accounts/follower_accounts_controller.rb'
-    - 'app/controllers/api/v1/accounts/following_accounts_controller.rb'
-    - 'app/controllers/api/v1/accounts/statuses_controller.rb'
-    - 'app/controllers/api/v1/admin/accounts_controller.rb'
-    - 'app/controllers/api/v1/admin/domain_blocks_controller.rb'
-    - 'app/controllers/api/v1/blocks_controller.rb'
-    - 'app/controllers/api/v1/conversations_controller.rb'
-    - 'app/controllers/api/v1/domain_blocks_controller.rb'
-    - 'app/controllers/api/v1/emails/confirmations_controller.rb'
-    - 'app/controllers/api/v1/endorsements_controller.rb'
-    - 'app/controllers/api/v1/favourites_controller.rb'
-    - 'app/controllers/api/v1/filters_controller.rb'
-    - 'app/controllers/api/v1/follow_requests_controller.rb'
-    - 'app/controllers/api/v1/lists/accounts_controller.rb'
-    - 'app/controllers/api/v1/mutes_controller.rb'
-    - 'app/controllers/api/v1/notifications_controller.rb'
-    - 'app/controllers/api/v1/scheduled_statuses_controller.rb'
-    - 'app/controllers/api/v1/statuses/favourited_by_accounts_controller.rb'
-    - 'app/controllers/api/v1/statuses/reblogged_by_accounts_controller.rb'
-    - 'app/controllers/api/v1/trends/links_controller.rb'
-    - 'app/controllers/api/v1/trends/statuses_controller.rb'
-    - 'app/controllers/api/v1/trends/tags_controller.rb'
-    - 'app/controllers/api/v2/admin/accounts_controller.rb'
-    - 'app/controllers/api/v2/search_controller.rb'
-    - 'app/controllers/auth/registrations_controller.rb'
-    - 'app/controllers/auth/sessions_controller.rb'
-    - 'app/controllers/concerns/localized.rb'
-    - 'app/controllers/concerns/rate_limit_headers.rb'
-    - 'app/controllers/concerns/signature_verification.rb'
-    - 'app/controllers/filters/statuses_controller.rb'
-    - 'app/helpers/application_helper.rb'
-    - 'app/helpers/jsonld_helper.rb'
-    - 'app/lib/activitypub/activity/announce.rb'
-    - 'app/lib/activitypub/activity/create.rb'
-    - 'app/lib/activitypub/activity/like.rb'
-    - 'app/lib/activitypub/linked_data_signature.rb'
-    - 'app/lib/activitypub/parser/media_attachment_parser.rb'
-    - 'app/lib/feed_manager.rb'
-    - 'app/lib/status_cache_hydrator.rb'
-    - 'app/lib/status_finder.rb'
-    - 'app/models/account.rb'
-    - 'app/models/account_migration.rb'
-    - 'app/models/account_statuses_cleanup_policy.rb'
-    - 'app/models/admin/import.rb'
-    - 'app/models/admin/status_batch_action.rb'
-    - 'app/models/concerns/account_avatar.rb'
-    - 'app/models/concerns/account_counters.rb'
-    - 'app/models/concerns/account_header.rb'
-    - 'app/models/concerns/account_interactions.rb'
-    - 'app/models/concerns/attachmentable.rb'
-    - 'app/models/concerns/ldap_authenticable.rb'
-    - 'app/models/concerns/omniauthable.rb'
-    - 'app/models/form/redirect.rb'
-    - 'app/models/media_attachment.rb'
-    - 'app/models/scheduled_status.rb'
-    - 'app/models/status.rb'
-    - 'app/models/trends.rb'
-    - 'app/models/trends/links.rb'
-    - 'app/models/trends/statuses.rb'
-    - 'app/models/user_role.rb'
-    - 'app/presenters/status_relationships_presenter.rb'
-    - 'app/serializers/initial_state_serializer.rb'
-    - 'app/serializers/rest/instance_serializer.rb'
-    - 'app/services/activitypub/fetch_remote_actor_service.rb'
-    - 'app/services/activitypub/fetch_remote_status_service.rb'
-    - 'app/services/activitypub/prepare_followers_synchronization_service.rb'
-    - 'app/services/activitypub/process_status_update_service.rb'
-    - 'app/services/block_domain_service.rb'
-    - 'app/services/fetch_link_card_service.rb'
-    - 'app/services/fetch_resource_service.rb'
-    - 'app/services/notify_service.rb'
-    - 'app/services/post_status_service.rb'
-    - 'app/services/remove_from_followers_service.rb'
-    - 'app/services/report_service.rb'
-    - 'app/services/resolve_account_service.rb'
-    - 'app/services/search_service.rb'
-    - 'app/services/unblock_domain_service.rb'
-    - 'app/services/update_status_service.rb'
-    - 'app/validators/disallowed_hashtags_validator.rb'
-    - 'app/validators/existing_username_validator.rb'
-    - 'app/validators/follow_limit_validator.rb'
-    - 'app/validators/import_validator.rb'
-    - 'app/validators/note_length_validator.rb'
-    - 'app/validators/poll_validator.rb'
-    - 'app/validators/reaction_validator.rb'
-    - 'app/validators/registration_form_time_validator.rb'
-    - 'app/workers/activitypub/delivery_worker.rb'
-    - 'app/workers/move_worker.rb'
-    - 'db/migrate/20180514140000_revert_index_change_on_statuses_for_api_v1_accounts_account_id_statuses.rb'
-    - 'db/migrate/20180528141303_fix_accounts_unique_index.rb'
-    - 'db/migrate/20200510181721_remove_duplicated_indexes_pghero.rb'
-    - 'db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb'
-    - 'lib/cli.rb'
-    - 'lib/mastodon/accounts_cli.rb'
-    - 'lib/mastodon/domains_cli.rb'
-    - 'lib/mastodon/maintenance_cli.rb'
-    - 'lib/mastodon/media_cli.rb'
-    - 'lib/mastodon/redis_config.rb'
-    - 'lib/mastodon/statuses_cli.rb'
-    - 'spec/support/matchers/model/model_have_error_on_field.rb'
-
 # Offense count: 3
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: InverseMethods, InverseBlocks.
diff --git a/app/controllers/admin/domain_blocks_controller.rb b/app/controllers/admin/domain_blocks_controller.rb
index 74764640b..060db11bb 100644
--- a/app/controllers/admin/domain_blocks_controller.rb
+++ b/app/controllers/admin/domain_blocks_controller.rb
@@ -90,9 +90,7 @@ module Admin
     end
 
     def action_from_button
-      if params[:save]
-        'save'
-      end
+      'save' if params[:save]
     end
   end
 end
diff --git a/app/controllers/api/v1/accounts/follower_accounts_controller.rb b/app/controllers/api/v1/accounts/follower_accounts_controller.rb
index b61de13b9..68952de89 100644
--- a/app/controllers/api/v1/accounts/follower_accounts_controller.rb
+++ b/app/controllers/api/v1/accounts/follower_accounts_controller.rb
@@ -45,15 +45,11 @@ class Api::V1::Accounts::FollowerAccountsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_account_followers_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_account_followers_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @accounts.empty?
-      api_v1_account_followers_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_account_followers_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/accounts/following_accounts_controller.rb b/app/controllers/api/v1/accounts/following_accounts_controller.rb
index 37d3c2d78..0a4d2ae7b 100644
--- a/app/controllers/api/v1/accounts/following_accounts_controller.rb
+++ b/app/controllers/api/v1/accounts/following_accounts_controller.rb
@@ -45,15 +45,11 @@ class Api::V1::Accounts::FollowingAccountsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_account_following_index_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_account_following_index_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @accounts.empty?
-      api_v1_account_following_index_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_account_following_index_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/accounts/statuses_controller.rb b/app/controllers/api/v1/accounts/statuses_controller.rb
index 38c9f5a20..7ed48cf65 100644
--- a/app/controllers/api/v1/accounts/statuses_controller.rb
+++ b/app/controllers/api/v1/accounts/statuses_controller.rb
@@ -39,15 +39,11 @@ class Api::V1::Accounts::StatusesController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_account_statuses_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_account_statuses_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @statuses.empty?
-      api_v1_account_statuses_url pagination_params(min_id: pagination_since_id)
-    end
+    api_v1_account_statuses_url pagination_params(min_id: pagination_since_id) unless @statuses.empty?
   end
 
   def records_continue?
diff --git a/app/controllers/api/v1/admin/accounts_controller.rb b/app/controllers/api/v1/admin/accounts_controller.rb
index f48300072..ff9cae639 100644
--- a/app/controllers/api/v1/admin/accounts_controller.rb
+++ b/app/controllers/api/v1/admin/accounts_controller.rb
@@ -120,9 +120,7 @@ class Api::V1::Admin::AccountsController < Api::BaseController
       translated_params[:status] = status.to_s if params[status].present?
     end
 
-    if params[:staff].present?
-      translated_params[:role_ids] = UserRole.that_can(:manage_reports).map(&:id)
-    end
+    translated_params[:role_ids] = UserRole.that_can(:manage_reports).map(&:id) if params[:staff].present?
 
     translated_params
   end
diff --git a/app/controllers/api/v1/blocks_controller.rb b/app/controllers/api/v1/blocks_controller.rb
index a65e762c9..06a8bfa89 100644
--- a/app/controllers/api/v1/blocks_controller.rb
+++ b/app/controllers/api/v1/blocks_controller.rb
@@ -33,15 +33,11 @@ class Api::V1::BlocksController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_blocks_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_blocks_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless paginated_blocks.empty?
-      api_v1_blocks_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_blocks_url pagination_params(since_id: pagination_since_id) unless paginated_blocks.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/conversations_controller.rb b/app/controllers/api/v1/conversations_controller.rb
index 6c7583403..9034e8a2f 100644
--- a/app/controllers/api/v1/conversations_controller.rb
+++ b/app/controllers/api/v1/conversations_controller.rb
@@ -40,15 +40,11 @@ class Api::V1::ConversationsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_conversations_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_conversations_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @conversations.empty?
-      api_v1_conversations_url pagination_params(min_id: pagination_since_id)
-    end
+    api_v1_conversations_url pagination_params(min_id: pagination_since_id) unless @conversations.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/domain_blocks_controller.rb b/app/controllers/api/v1/domain_blocks_controller.rb
index 1891261b9..34def3c44 100644
--- a/app/controllers/api/v1/domain_blocks_controller.rb
+++ b/app/controllers/api/v1/domain_blocks_controller.rb
@@ -43,15 +43,11 @@ class Api::V1::DomainBlocksController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_domain_blocks_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_domain_blocks_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @blocks.empty?
-      api_v1_domain_blocks_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_domain_blocks_url pagination_params(since_id: pagination_since_id) unless @blocks.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/endorsements_controller.rb b/app/controllers/api/v1/endorsements_controller.rb
index 9e80f468a..46e3fcd64 100644
--- a/app/controllers/api/v1/endorsements_controller.rb
+++ b/app/controllers/api/v1/endorsements_controller.rb
@@ -35,17 +35,13 @@ class Api::V1::EndorsementsController < Api::BaseController
   def next_path
     return if unlimited?
 
-    if records_continue?
-      api_v1_endorsements_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_endorsements_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
     return if unlimited?
 
-    unless @accounts.empty?
-      api_v1_endorsements_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_endorsements_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/favourites_controller.rb b/app/controllers/api/v1/favourites_controller.rb
index 2a873696c..bd7f3d775 100644
--- a/app/controllers/api/v1/favourites_controller.rb
+++ b/app/controllers/api/v1/favourites_controller.rb
@@ -36,15 +36,11 @@ class Api::V1::FavouritesController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_favourites_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_favourites_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless results.empty?
-      api_v1_favourites_url pagination_params(min_id: pagination_since_id)
-    end
+    api_v1_favourites_url pagination_params(min_id: pagination_since_id) unless results.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/follow_requests_controller.rb b/app/controllers/api/v1/follow_requests_controller.rb
index 54ff0e11d..7c197ce6b 100644
--- a/app/controllers/api/v1/follow_requests_controller.rb
+++ b/app/controllers/api/v1/follow_requests_controller.rb
@@ -53,15 +53,11 @@ class Api::V1::FollowRequestsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_follow_requests_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_follow_requests_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @accounts.empty?
-      api_v1_follow_requests_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_follow_requests_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/lists/accounts_controller.rb b/app/controllers/api/v1/lists/accounts_controller.rb
index b66ea9bfe..8e12cb7b6 100644
--- a/app/controllers/api/v1/lists/accounts_controller.rb
+++ b/app/controllers/api/v1/lists/accounts_controller.rb
@@ -62,17 +62,13 @@ class Api::V1::Lists::AccountsController < Api::BaseController
   def next_path
     return if unlimited?
 
-    if records_continue?
-      api_v1_list_accounts_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_list_accounts_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
     return if unlimited?
 
-    unless @accounts.empty?
-      api_v1_list_accounts_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_list_accounts_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/mutes_controller.rb b/app/controllers/api/v1/mutes_controller.rb
index 6cde53a2a..555485823 100644
--- a/app/controllers/api/v1/mutes_controller.rb
+++ b/app/controllers/api/v1/mutes_controller.rb
@@ -33,15 +33,11 @@ class Api::V1::MutesController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_mutes_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_mutes_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless paginated_mutes.empty?
-      api_v1_mutes_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_mutes_url pagination_params(since_id: pagination_since_id) unless paginated_mutes.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/notifications_controller.rb b/app/controllers/api/v1/notifications_controller.rb
index 41f7f93af..2024d521c 100644
--- a/app/controllers/api/v1/notifications_controller.rb
+++ b/app/controllers/api/v1/notifications_controller.rb
@@ -58,15 +58,11 @@ class Api::V1::NotificationsController < Api::BaseController
   end
 
   def next_path
-    unless @notifications.empty?
-      api_v1_notifications_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_notifications_url pagination_params(max_id: pagination_max_id) unless @notifications.empty?
   end
 
   def prev_path
-    unless @notifications.empty?
-      api_v1_notifications_url pagination_params(min_id: pagination_since_id)
-    end
+    api_v1_notifications_url pagination_params(min_id: pagination_since_id) unless @notifications.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/scheduled_statuses_controller.rb b/app/controllers/api/v1/scheduled_statuses_controller.rb
index f90642a73..2220b6d22 100644
--- a/app/controllers/api/v1/scheduled_statuses_controller.rb
+++ b/app/controllers/api/v1/scheduled_statuses_controller.rb
@@ -52,15 +52,11 @@ class Api::V1::ScheduledStatusesController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_scheduled_statuses_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_scheduled_statuses_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @statuses.empty?
-      api_v1_scheduled_statuses_url pagination_params(min_id: pagination_since_id)
-    end
+    api_v1_scheduled_statuses_url pagination_params(min_id: pagination_since_id) unless @statuses.empty?
   end
 
   def records_continue?
diff --git a/app/controllers/api/v1/statuses/favourited_by_accounts_controller.rb b/app/controllers/api/v1/statuses/favourited_by_accounts_controller.rb
index 2b614a837..b138fa265 100644
--- a/app/controllers/api/v1/statuses/favourited_by_accounts_controller.rb
+++ b/app/controllers/api/v1/statuses/favourited_by_accounts_controller.rb
@@ -41,15 +41,11 @@ class Api::V1::Statuses::FavouritedByAccountsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_status_favourited_by_index_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_status_favourited_by_index_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @accounts.empty?
-      api_v1_status_favourited_by_index_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_status_favourited_by_index_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v1/statuses/reblogged_by_accounts_controller.rb b/app/controllers/api/v1/statuses/reblogged_by_accounts_controller.rb
index 24db30fcc..4b545f982 100644
--- a/app/controllers/api/v1/statuses/reblogged_by_accounts_controller.rb
+++ b/app/controllers/api/v1/statuses/reblogged_by_accounts_controller.rb
@@ -37,15 +37,11 @@ class Api::V1::Statuses::RebloggedByAccountsController < Api::BaseController
   end
 
   def next_path
-    if records_continue?
-      api_v1_status_reblogged_by_index_url pagination_params(max_id: pagination_max_id)
-    end
+    api_v1_status_reblogged_by_index_url pagination_params(max_id: pagination_max_id) if records_continue?
   end
 
   def prev_path
-    unless @accounts.empty?
-      api_v1_status_reblogged_by_index_url pagination_params(since_id: pagination_since_id)
-    end
+    api_v1_status_reblogged_by_index_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
   end
 
   def pagination_max_id
diff --git a/app/controllers/api/v2/admin/accounts_controller.rb b/app/controllers/api/v2/admin/accounts_controller.rb
index b25831aa0..0c451f778 100644
--- a/app/controllers/api/v2/admin/accounts_controller.rb
+++ b/app/controllers/api/v2/admin/accounts_controller.rb
@@ -25,9 +25,7 @@ class Api::V2::Admin::AccountsController < Api::V1::Admin::AccountsController
   def translated_filter_params
     translated_params = filter_params.slice(*AccountFilter::KEYS)
 
-    if params[:permissions] == 'staff'
-      translated_params[:role_ids] = UserRole.that_can(:manage_reports).map(&:id)
-    end
+    translated_params[:role_ids] = UserRole.that_can(:manage_reports).map(&:id) if params[:permissions] == 'staff'
 
     translated_params
   end
diff --git a/app/controllers/auth/registrations_controller.rb b/app/controllers/auth/registrations_controller.rb
index 71c0cd827..c5418ba0c 100644
--- a/app/controllers/auth/registrations_controller.rb
+++ b/app/controllers/auth/registrations_controller.rb
@@ -30,9 +30,7 @@ class Auth::RegistrationsController < Devise::RegistrationsController
 
   def update
     super do |resource|
-      if resource.saved_change_to_encrypted_password?
-        resource.clear_other_sessions(current_session.session_id)
-      end
+      resource.clear_other_sessions(current_session.session_id) if resource.saved_change_to_encrypted_password?
     end
   end
 
diff --git a/app/controllers/auth/sessions_controller.rb b/app/controllers/auth/sessions_controller.rb
index afcf8b24b..3ce742638 100644
--- a/app/controllers/auth/sessions_controller.rb
+++ b/app/controllers/auth/sessions_controller.rb
@@ -110,9 +110,7 @@ class Auth::SessionsController < Devise::SessionsController
   def home_paths(resource)
     paths = [about_path]
 
-    if single_user_mode? && resource.is_a?(User)
-      paths << short_account_path(username: resource.account)
-    end
+    paths << short_account_path(username: resource.account) if single_user_mode? && resource.is_a?(User)
 
     paths
   end
diff --git a/app/controllers/filters/statuses_controller.rb b/app/controllers/filters/statuses_controller.rb
index cc493c22c..7779c6d95 100644
--- a/app/controllers/filters/statuses_controller.rb
+++ b/app/controllers/filters/statuses_controller.rb
@@ -38,9 +38,7 @@ class Filters::StatusesController < ApplicationController
   end
 
   def action_from_button
-    if params[:remove]
-      'remove'
-    end
+    'remove' if params[:remove]
   end
 
   def set_body_classes
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index b2687eddd..1f93b33f5 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -216,9 +216,7 @@ module ApplicationHelper
       state_params[:moved_to_account] = current_account.moved_to_account
     end
 
-    if single_user_mode?
-      state_params[:owner] = Account.local.without_suspended.where('id > 0').first
-    end
+    state_params[:owner] = Account.local.without_suspended.where('id > 0').first if single_user_mode?
 
     json = ActiveModelSerializers::SerializableResource.new(InitialStatePresenter.new(state_params), serializer: InitialStateSerializer).to_json
     # rubocop:disable Rails/OutputSafety
diff --git a/app/lib/activitypub/linked_data_signature.rb b/app/lib/activitypub/linked_data_signature.rb
index f90adaf6c..61759649a 100644
--- a/app/lib/activitypub/linked_data_signature.rb
+++ b/app/lib/activitypub/linked_data_signature.rb
@@ -27,9 +27,7 @@ class ActivityPub::LinkedDataSignature
     document_hash  = hash(@json.without('signature'))
     to_be_verified = options_hash + document_hash
 
-    if creator.keypair.public_key.verify(OpenSSL::Digest.new('SHA256'), Base64.decode64(signature), to_be_verified)
-      creator
-    end
+    creator if creator.keypair.public_key.verify(OpenSSL::Digest.new('SHA256'), Base64.decode64(signature), to_be_verified)
   end
 
   def sign!(creator, sign_with: nil)
diff --git a/app/lib/activitypub/parser/media_attachment_parser.rb b/app/lib/activitypub/parser/media_attachment_parser.rb
index 656be84b7..56b8b23f8 100644
--- a/app/lib/activitypub/parser/media_attachment_parser.rb
+++ b/app/lib/activitypub/parser/media_attachment_parser.rb
@@ -50,9 +50,7 @@ class ActivityPub::Parser::MediaAttachmentParser
     components = begin
       blurhash = @json['blurhash']
 
-      if blurhash.present? && /^[\w#$%*+,-.:;=?@\[\]^{|}~]+$/.match?(blurhash)
-        Blurhash.components(blurhash)
-      end
+      Blurhash.components(blurhash) if blurhash.present? && /^[\w#$%*+,-.:;=?@\[\]^{|}~]+$/.match?(blurhash)
     end
 
     components.present? && components.none? { |comp| comp > 5 }
diff --git a/app/lib/status_finder.rb b/app/lib/status_finder.rb
index 22ced8bf8..1a7f2fe69 100644
--- a/app/lib/status_finder.rb
+++ b/app/lib/status_finder.rb
@@ -27,8 +27,6 @@ class StatusFinder
   end
 
   def verify_action!
-    unless recognized_params[:action] == 'show'
-      raise ActiveRecord::RecordNotFound
-    end
+    raise ActiveRecord::RecordNotFound unless recognized_params[:action] == 'show'
   end
 end
diff --git a/app/models/account.rb b/app/models/account.rb
index 262285a09..a96e204fa 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -313,9 +313,7 @@ class Account < ApplicationRecord
 
         previous = old_fields.find { |item| item['value'] == attr[:value] }
 
-        if previous && previous['verified_at'].present?
-          attr[:verified_at] = previous['verified_at']
-        end
+        attr[:verified_at] = previous['verified_at'] if previous && previous['verified_at'].present?
 
         fields << attr
       end
diff --git a/app/models/account_statuses_cleanup_policy.rb b/app/models/account_statuses_cleanup_policy.rb
index 49adc6ad0..14ce00abb 100644
--- a/app/models/account_statuses_cleanup_policy.rb
+++ b/app/models/account_statuses_cleanup_policy.rb
@@ -122,9 +122,7 @@ class AccountStatusesCleanupPolicy < ApplicationRecord
       # may need to be deleted, so we'll have to start again.
       redis.del("account_cleanup:#{account.id}")
     end
-    if EXCEPTION_THRESHOLDS.map { |name| attribute_change_to_be_saved(name) }.compact.any? { |old, new| old.present? && (new.nil? || new > old) }
-      redis.del("account_cleanup:#{account.id}")
-    end
+    redis.del("account_cleanup:#{account.id}") if EXCEPTION_THRESHOLDS.map { |name| attribute_change_to_be_saved(name) }.compact.any? { |old, new| old.present? && (new.nil? || new > old) }
   end
 
   def validate_local_account
@@ -141,9 +139,7 @@ class AccountStatusesCleanupPolicy < ApplicationRecord
     # has switched to snowflake IDs significantly over 2 years ago anyway.
     snowflake_id = Mastodon::Snowflake.id_at(min_status_age.seconds.ago, with_random: false)
 
-    if max_id.nil? || snowflake_id < max_id
-      max_id = snowflake_id
-    end
+    max_id = snowflake_id if max_id.nil? || snowflake_id < max_id
 
     Status.where(Status.arel_table[:id].lteq(max_id))
   end
diff --git a/app/models/concerns/account_interactions.rb b/app/models/concerns/account_interactions.rb
index de8bf338f..325619774 100644
--- a/app/models/concerns/account_interactions.rb
+++ b/app/models/concerns/account_interactions.rb
@@ -151,9 +151,7 @@ module AccountInteractions
     remove_potential_friendship(other_account)
 
     # When toggling a mute between hiding and allowing notifications, the mute will already exist, so the find_or_create_by! call will return the existing Mute without updating the hide_notifications attribute. Therefore, we check that hide_notifications? is what we want and set it if it isn't.
-    if mute.hide_notifications? != notifications
-      mute.update!(hide_notifications: notifications)
-    end
+    mute.update!(hide_notifications: notifications) if mute.hide_notifications? != notifications
 
     mute
   end
diff --git a/app/models/concerns/omniauthable.rb b/app/models/concerns/omniauthable.rb
index 7d54e9d6d..b0aa5be6f 100644
--- a/app/models/concerns/omniauthable.rb
+++ b/app/models/concerns/omniauthable.rb
@@ -56,9 +56,7 @@ module Omniauthable
       user = User.new(user_params_from_auth(email, auth))
 
       begin
-        if /\A#{URI::DEFAULT_PARSER.make_regexp(%w(http https))}\z/.match?(auth.info.image)
-          user.account.avatar_remote_url = auth.info.image
-        end
+        user.account.avatar_remote_url = auth.info.image if /\A#{URI::DEFAULT_PARSER.make_regexp(%w(http https))}\z/.match?(auth.info.image)
       rescue Mastodon::UnexpectedResponseError
         user.account.avatar_remote_url = nil
       end
diff --git a/app/serializers/initial_state_serializer.rb b/app/serializers/initial_state_serializer.rb
index 95b28fa15..fa1ddc6d3 100644
--- a/app/serializers/initial_state_serializer.rb
+++ b/app/serializers/initial_state_serializer.rb
@@ -61,9 +61,7 @@ class InitialStateSerializer < ActiveModel::Serializer
     store[:disabled_account_id] = object.disabled_account.id.to_s if object.disabled_account
     store[:moved_to_account_id] = object.moved_to_account.id.to_s if object.moved_to_account
 
-    if Rails.configuration.x.single_user_mode
-      store[:owner] = object.owner&.id&.to_s
-    end
+    store[:owner] = object.owner&.id&.to_s if Rails.configuration.x.single_user_mode
 
     store
   end
diff --git a/app/serializers/rest/instance_serializer.rb b/app/serializers/rest/instance_serializer.rb
index e280f8eb6..a07840f0c 100644
--- a/app/serializers/rest/instance_serializer.rb
+++ b/app/serializers/rest/instance_serializer.rb
@@ -95,9 +95,7 @@ class REST::InstanceSerializer < ActiveModel::Serializer
   end
 
   def registrations_message
-    if Setting.closed_registrations_message.present?
-      markdown.render(Setting.closed_registrations_message)
-    end
+    markdown.render(Setting.closed_registrations_message) if Setting.closed_registrations_message.present?
   end
 
   def markdown
diff --git a/app/services/activitypub/fetch_remote_actor_service.rb b/app/services/activitypub/fetch_remote_actor_service.rb
index 8908d21e2..e8992b845 100644
--- a/app/services/activitypub/fetch_remote_actor_service.rb
+++ b/app/services/activitypub/fetch_remote_actor_service.rb
@@ -56,9 +56,7 @@ class ActivityPub::FetchRemoteActorService < BaseService
     webfinger                            = webfinger!("acct:#{confirmed_username}@#{confirmed_domain}")
     @username, @domain                   = split_acct(webfinger.subject)
 
-    unless confirmed_username.casecmp(@username).zero? && confirmed_domain.casecmp(@domain).zero?
-      raise Webfinger::RedirectError, "Too many webfinger redirects for URI #{@uri} (stopped at #{@username}@#{@domain})"
-    end
+    raise Webfinger::RedirectError, "Too many webfinger redirects for URI #{@uri} (stopped at #{@username}@#{@domain})" unless confirmed_username.casecmp(@username).zero? && confirmed_domain.casecmp(@domain).zero?
 
     raise Error, "Webfinger response for #{@username}@#{@domain} does not loop back to #{@uri}" if webfinger.link('self', 'href') != @uri
   rescue Webfinger::RedirectError => e
diff --git a/app/services/activitypub/process_status_update_service.rb b/app/services/activitypub/process_status_update_service.rb
index 1dc393e28..ac7372f74 100644
--- a/app/services/activitypub/process_status_update_service.rb
+++ b/app/services/activitypub/process_status_update_service.rb
@@ -80,9 +80,7 @@ class ActivityPub::ProcessStatusUpdateService < BaseService
 
         # If a previously existing media attachment was significantly updated, mark
         # media attachments as changed even if none were added or removed
-        if media_attachment_parser.significantly_changes?(media_attachment)
-          @media_attachments_changed = true
-        end
+        @media_attachments_changed = true if media_attachment_parser.significantly_changes?(media_attachment)
 
         media_attachment.description          = media_attachment_parser.description
         media_attachment.focus                = media_attachment_parser.focus
diff --git a/app/services/remove_from_followers_service.rb b/app/services/remove_from_followers_service.rb
index 3dac5467f..007d5b1fd 100644
--- a/app/services/remove_from_followers_service.rb
+++ b/app/services/remove_from_followers_service.rb
@@ -7,9 +7,7 @@ class RemoveFromFollowersService < BaseService
     source_account.passive_relationships.where(account_id: target_accounts).find_each do |follow|
       follow.destroy
 
-      if source_account.local? && !follow.account.local? && follow.account.activitypub?
-        create_notification(follow)
-      end
+      create_notification(follow) if source_account.local? && !follow.account.local? && follow.account.activitypub?
     end
   end
 
diff --git a/app/services/resolve_account_service.rb b/app/services/resolve_account_service.rb
index 1ba372cd6..c76df5a0e 100644
--- a/app/services/resolve_account_service.rb
+++ b/app/services/resolve_account_service.rb
@@ -96,9 +96,7 @@ class ResolveAccountService < BaseService
     @webfinger         = webfinger!("acct:#{confirmed_username}@#{confirmed_domain}")
     @username, @domain = split_acct(@webfinger.subject)
 
-    unless confirmed_username.casecmp(@username).zero? && confirmed_domain.casecmp(@domain).zero?
-      raise Webfinger::RedirectError, "Too many webfinger redirects for URI #{uri} (stopped at #{@username}@#{@domain})"
-    end
+    raise Webfinger::RedirectError, "Too many webfinger redirects for URI #{uri} (stopped at #{@username}@#{@domain})" unless confirmed_username.casecmp(@username).zero? && confirmed_domain.casecmp(@domain).zero?
   rescue Webfinger::GoneError
     @gone = true
   end
diff --git a/app/services/search_service.rb b/app/services/search_service.rb
index 1a76cbb38..93b72fa0c 100644
--- a/app/services/search_service.rb
+++ b/app/services/search_service.rb
@@ -37,9 +37,7 @@ class SearchService < BaseService
   def perform_statuses_search!
     definition = parsed_query.apply(StatusesIndex.filter(term: { searchable_by: @account.id }))
 
-    if @options[:account_id].present?
-      definition = definition.filter(term: { account_id: @options[:account_id] })
-    end
+    definition = definition.filter(term: { account_id: @options[:account_id] }) if @options[:account_id].present?
 
     if @options[:min_id].present? || @options[:max_id].present?
       range      = {}
diff --git a/lib/mastodon/media_cli.rb b/lib/mastodon/media_cli.rb
index 24cc98964..a901a6ab9 100644
--- a/lib/mastodon/media_cli.rb
+++ b/lib/mastodon/media_cli.rb
@@ -277,9 +277,7 @@ module Mastodon
         exit(1)
       end
 
-      if options[:days].present?
-        scope = scope.where('media_attachments.id > ?', Mastodon::Snowflake.id_at(options[:days].days.ago, with_random: false))
-      end
+      scope = scope.where('media_attachments.id > ?', Mastodon::Snowflake.id_at(options[:days].days.ago, with_random: false)) if options[:days].present?
 
       processed, aggregate = parallelize_with_progress(scope) do |media_attachment|
         next if media_attachment.remote_url.blank? || (!options[:force] && media_attachment.file_file_name.present?)
diff --git a/lib/mastodon/redis_config.rb b/lib/mastodon/redis_config.rb
index 3522fa11e..037ca5edc 100644
--- a/lib/mastodon/redis_config.rb
+++ b/lib/mastodon/redis_config.rb
@@ -46,6 +46,4 @@ REDIS_SIDEKIQ_PARAMS = {
   namespace: sidekiq_namespace,
 }.freeze
 
-if Rails.env.test?
-  ENV['REDIS_NAMESPACE'] = "mastodon_test#{ENV['TEST_ENV_NUMBER']}"
-end
+ENV['REDIS_NAMESPACE'] = "mastodon_test#{ENV['TEST_ENV_NUMBER']}" if Rails.env.test?
diff --git a/spec/support/matchers/model/model_have_error_on_field.rb b/spec/support/matchers/model/model_have_error_on_field.rb
index 85bdd8215..d85db2fca 100644
--- a/spec/support/matchers/model/model_have_error_on_field.rb
+++ b/spec/support/matchers/model/model_have_error_on_field.rb
@@ -1,8 +1,6 @@
 RSpec::Matchers.define :model_have_error_on_field do |expected|
   match do |record|
-    if record.errors.empty?
-      record.valid?
-    end
+    record.valid? if record.errors.empty?
 
     record.errors.has_key?(expected)
   end