diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b4048109..db505591b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -78,6 +78,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - ActivityPub: Deactivated user deletion
 - ActivityPub: Fix `/users/:nickname/inbox` crashing without an authenticated user
 - MRF: fix ability to follow a relay when AntiFollowbotPolicy was enabled
+- Mastodon API: Blocks are now treated consistently between the Streaming API and the Timeline APIs
 
 ### Added
 - Expiring/ephemeral activites. All activities can have expires_at value set, which controls when they should be deleted automatically.
diff --git a/lib/pleroma/web/streamer/ping.ex b/lib/pleroma/web/streamer/ping.ex
index f77cbb95c..db3e68abe 100644
--- a/lib/pleroma/web/streamer/ping.ex
+++ b/lib/pleroma/web/streamer/ping.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Streamer.Ping do
   use GenServer
   require Logger
diff --git a/lib/pleroma/web/streamer/state.ex b/lib/pleroma/web/streamer/state.ex
index c48752d95..5ce3ebb8a 100644
--- a/lib/pleroma/web/streamer/state.ex
+++ b/lib/pleroma/web/streamer/state.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Streamer.State do
   use GenServer
   require Logger
diff --git a/lib/pleroma/web/streamer/streamer_socket.ex b/lib/pleroma/web/streamer/streamer_socket.ex
index f006c0306..cf0fa3077 100644
--- a/lib/pleroma/web/streamer/streamer_socket.ex
+++ b/lib/pleroma/web/streamer/streamer_socket.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Streamer.StreamerSocket do
   defstruct transport_pid: nil, user: nil
 
diff --git a/lib/pleroma/web/streamer/supervisor.ex b/lib/pleroma/web/streamer/supervisor.ex
index 6afe19323..ec5985085 100644
--- a/lib/pleroma/web/streamer/supervisor.ex
+++ b/lib/pleroma/web/streamer/supervisor.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Streamer.Supervisor do
   use Supervisor
 
diff --git a/lib/pleroma/web/streamer/worker.ex b/lib/pleroma/web/streamer/worker.ex
index 5804508eb..0ea224874 100644
--- a/lib/pleroma/web/streamer/worker.ex
+++ b/lib/pleroma/web/streamer/worker.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Streamer.Worker do
   use GenServer
 
@@ -128,11 +132,14 @@ defp should_send?(%User{} = user, %Activity{} = item) do
     blocks = user.info.blocks || []
     mutes = user.info.mutes || []
     reblog_mutes = user.info.muted_reblogs || []
+    recipient_blocks = MapSet.new(blocks ++ mutes)
+    recipients = MapSet.new(item.recipients)
     domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.info.domain_blocks)
 
     with parent when not is_nil(parent) <- Object.normalize(item),
          true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
          true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
+         true <- MapSet.disjoint?(recipients, recipient_blocks),
          %{host: item_host} <- URI.parse(item.actor),
          %{host: parent_host} <- URI.parse(parent.data["actor"]),
          false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
@@ -194,11 +201,8 @@ def push_to_socket(topics, topic, item) do
       # Get the current user so we have up-to-date blocks etc.
       if socket_user do
         user = User.get_cached_by_ap_id(socket_user.ap_id)
-        blocks = user.info.blocks || []
-        mutes = user.info.mutes || []
 
-        with true <- Enum.all?([blocks, mutes], &(item.actor not in &1)),
-             true <- thread_containment(item, user) do
+        if should_send?(user, item) do
           send(transport_pid, {:text, StreamerView.render("update.json", item, user)})
         end
       else
diff --git a/test/web/streamer/streamer_test.exs b/test/web/streamer/streamer_test.exs
index b8fcd41fa..d33eb1e42 100644
--- a/test/web/streamer/streamer_test.exs
+++ b/test/web/streamer/streamer_test.exs
@@ -233,30 +233,68 @@ test "it sends message if recipients invalid and thread containment is enabled b
     end
   end
 
-  test "it doesn't send to blocked users" do
-    user = insert(:user)
-    blocked_user = insert(:user)
-    {:ok, user} = User.block(user, blocked_user)
+  describe "blocks" do
+    test "it doesn't send messages involving blocked users" do
+      user = insert(:user)
+      blocked_user = insert(:user)
+      {:ok, user} = User.block(user, blocked_user)
 
-    task =
-      Task.async(fn ->
-        refute_receive {:text, _}, 1_000
-      end)
+      task =
+        Task.async(fn ->
+          refute_receive {:text, _}, 1_000
+        end)
 
-    fake_socket = %StreamerSocket{
-      transport_pid: task.pid,
-      user: user
-    }
+      fake_socket = %StreamerSocket{
+        transport_pid: task.pid,
+        user: user
+      }
 
-    {:ok, activity} = CommonAPI.post(blocked_user, %{"status" => "Test"})
+      {:ok, activity} = CommonAPI.post(blocked_user, %{"status" => "Test"})
 
-    topics = %{
-      "public" => [fake_socket]
-    }
+      topics = %{
+        "public" => [fake_socket]
+      }
 
-    Worker.push_to_socket(topics, "public", activity)
+      Worker.push_to_socket(topics, "public", activity)
 
-    Task.await(task)
+      Task.await(task)
+    end
+
+    test "it doesn't send messages transitively involving blocked users" do
+      blocker = insert(:user)
+      blockee = insert(:user)
+      friend = insert(:user)
+
+      task =
+        Task.async(fn ->
+          refute_receive {:text, _}, 1_000
+        end)
+
+      fake_socket = %StreamerSocket{
+        transport_pid: task.pid,
+        user: blocker
+      }
+
+      topics = %{
+        "public" => [fake_socket]
+      }
+
+      {:ok, blocker} = User.block(blocker, blockee)
+
+      {:ok, activity_one} = CommonAPI.post(friend, %{"status" => "hey! @#{blockee.nickname}"})
+
+      Worker.push_to_socket(topics, "public", activity_one)
+
+      {:ok, activity_two} = CommonAPI.post(blockee, %{"status" => "hey! @#{friend.nickname}"})
+
+      Worker.push_to_socket(topics, "public", activity_two)
+
+      {:ok, activity_three} = CommonAPI.post(blockee, %{"status" => "hey! @#{blocker.nickname}"})
+
+      Worker.push_to_socket(topics, "public", activity_three)
+
+      Task.await(task)
+    end
   end
 
   test "it doesn't send unwanted DMs to list" do