diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68ebb03a7..a1b606610 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -104,6 +104,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Mastodon API: Change emoji reaction reply format once more
 - Configuration: `feed.logo` option for tag feed.
 - Tag feed: `/tags/:tag.rss` - list public statuses by hashtag.
+- Mastodon API: Add `reacted` property to `emoji_reactions`
 </details>
 
 ### Fixed
diff --git a/docs/API/differences_in_mastoapi_responses.md b/docs/API/differences_in_mastoapi_responses.md
index 030660b34..82d967e4d 100644
--- a/docs/API/differences_in_mastoapi_responses.md
+++ b/docs/API/differences_in_mastoapi_responses.md
@@ -29,7 +29,7 @@ Has these additional fields under the `pleroma` object:
 - `spoiler_text`: a map consisting of alternate representations of the `spoiler_text` property with the key being it's mimetype. Currently the only alternate representation supported is `text/plain`
 - `expires_at`: a datetime (iso8601) that states when the post will expire (be deleted automatically), or empty if the post won't expire
 - `thread_muted`: true if the thread the post belongs to is muted
-- `emoji_reactions`: A list with emoji / reaction maps. The format is {emoji: "☕", count: 1}. Contains no information about the reacting users, for that use the `emoji_reactions_by` endpoint.
+- `emoji_reactions`: A list with emoji / reaction maps. The format is `{emoji: "☕", count: 1, reacted: true}`. Contains no information about the reacting users, for that use the `emoji_reactions_by` endpoint.
 
 ## Attachments
 
diff --git a/docs/API/pleroma_api.md b/docs/API/pleroma_api.md
index 9f5cafe5a..c7125c1cd 100644
--- a/docs/API/pleroma_api.md
+++ b/docs/API/pleroma_api.md
@@ -455,7 +455,7 @@ Emoji reactions work a lot like favourites do. They make it possible to react to
 * Example Response:
 ```json
 [
-  {"emoji": "😀", "count": 2, "accounts": [{"id" => "xyz.."...}, {"id" => "zyx..."}]},
-  {"emoji": "☕", "count": 1, "accounts": [{"id" => "abc..."}]}
+  {"emoji": "😀", "count": 2, "reacted": true, "accounts": [{"id" => "xyz.."...}, {"id" => "zyx..."}]},
+  {"emoji": "☕", "count": 1, "reacted": false, "accounts": [{"id" => "abc..."}]}
 ]
 ```
diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index e60ef709b..5df29d93f 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -256,7 +256,11 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     emoji_reactions =
       with %{data: %{"reactions" => emoji_reactions}} <- object do
         Enum.map(emoji_reactions, fn [emoji, users] ->
-          %{emoji: emoji, count: length(users)}
+          %{
+            emoji: emoji,
+            count: length(users),
+            reacted: !!(opts[:for] && opts[:for].ap_id in users)
+          }
         end)
       else
         _ -> []
diff --git a/lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex b/lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex
index cd1c0764f..d76e39795 100644
--- a/lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex
+++ b/lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex
@@ -47,13 +47,16 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIController do
            Object.normalize(activity) do
       reactions =
         emoji_reactions
-        |> Enum.map(fn [emoji, users] ->
-          users = Enum.map(users, &User.get_cached_by_ap_id/1)
+        |> Enum.map(fn [emoji, user_ap_ids] ->
+          users =
+            Enum.map(user_ap_ids, &User.get_cached_by_ap_id/1)
+            |> Enum.filter(& &1)
 
           %{
             emoji: emoji,
             count: length(users),
-            accounts: AccountView.render("index.json", %{users: users, for: user, as: :user})
+            accounts: AccountView.render("index.json", %{users: users, for: user, as: :user}),
+            reacted: !!(user && user.ap_id in user_ap_ids)
           }
         end)
 
diff --git a/test/web/mastodon_api/views/status_view_test.exs b/test/web/mastodon_api/views/status_view_test.exs
index 25777b011..fc110417c 100644
--- a/test/web/mastodon_api/views/status_view_test.exs
+++ b/test/web/mastodon_api/views/status_view_test.exs
@@ -37,8 +37,15 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     status = StatusView.render("show.json", activity: activity)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{emoji: "☕", count: 2},
-             %{emoji: "🍵", count: 1}
+             %{emoji: "☕", count: 2, reacted: false},
+             %{emoji: "🍵", count: 1, reacted: false}
+           ]
+
+    status = StatusView.render("show.json", activity: activity, for: user)
+
+    assert status[:pleroma][:emoji_reactions] == [
+             %{emoji: "☕", count: 2, reacted: true},
+             %{emoji: "🍵", count: 1, reacted: false}
            ]
   end
 
diff --git a/test/web/pleroma_api/controllers/pleroma_api_controller_test.exs b/test/web/pleroma_api/controllers/pleroma_api_controller_test.exs
index 3978c2ec5..be5007de5 100644
--- a/test/web/pleroma_api/controllers/pleroma_api_controller_test.exs
+++ b/test/web/pleroma_api/controllers/pleroma_api_controller_test.exs
@@ -25,9 +25,14 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
       |> assign(:user, other_user)
       |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
       |> post("/api/v1/pleroma/statuses/#{activity.id}/react_with_emoji", %{"emoji" => "☕"})
+      |> json_response(200)
 
-    assert %{"id" => id} = json_response(result, 200)
+    assert %{"id" => id} = result
     assert to_string(activity.id) == id
+
+    assert result["pleroma"]["emoji_reactions"] == [
+             %{"emoji" => "☕", "count" => 1, "reacted" => true}
+           ]
   end
 
   test "POST /api/v1/pleroma/statuses/:id/unreact_with_emoji", %{conn: conn} do
@@ -54,6 +59,7 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
   test "GET /api/v1/pleroma/statuses/:id/emoji_reactions_by", %{conn: conn} do
     user = insert(:user)
     other_user = insert(:user)
+    doomed_user = insert(:user)
 
     {:ok, activity} = CommonAPI.post(user, %{"status" => "#cofe"})
 
@@ -65,14 +71,29 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
     assert result == []
 
     {:ok, _, _} = CommonAPI.react_with_emoji(activity.id, other_user, "🎅")
+    {:ok, _, _} = CommonAPI.react_with_emoji(activity.id, doomed_user, "🎅")
+
+    User.perform(:delete, doomed_user)
 
     result =
       conn
       |> get("/api/v1/pleroma/statuses/#{activity.id}/emoji_reactions_by")
       |> json_response(200)
 
-    [%{"emoji" => "🎅", "count" => 1, "accounts" => [represented_user]}] = result
+    [%{"emoji" => "🎅", "count" => 1, "accounts" => [represented_user], "reacted" => false}] =
+      result
+
     assert represented_user["id"] == other_user.id
+
+    result =
+      conn
+      |> assign(:user, other_user)
+      |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["read:statuses"]))
+      |> get("/api/v1/pleroma/statuses/#{activity.id}/emoji_reactions_by")
+      |> json_response(200)
+
+    assert [%{"emoji" => "🎅", "count" => 1, "accounts" => [_represented_user], "reacted" => true}] =
+             result
   end
 
   test "/api/v1/pleroma/conversations/:id" do