diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2088f6b5c..2b5e019f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,7 +35,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Removed
 - FollowBotPolicy
-- Passing of undo/block into MRF
 
 ## Upgrade Notes
 - If you have an old instance, you will probably want to run `mix pleroma.database prune_task` in the foreground to catch it up with the history of your instance.
diff --git a/lib/pleroma/web/activity_pub/mrf.ex b/lib/pleroma/web/activity_pub/mrf.ex
index dae6d7f6a..064ffc527 100644
--- a/lib/pleroma/web/activity_pub/mrf.ex
+++ b/lib/pleroma/web/activity_pub/mrf.ex
@@ -63,12 +63,6 @@ defmodule Pleroma.Web.ActivityPub.MRF do
 
   @required_description_keys [:key, :related_policy]
 
-  def filter_one(policy, %{"type" => type} = message)
-      when type in ["Undo", "Block", "Delete"] and
-             policy != Pleroma.Web.ActivityPub.MRF.SimplePolicy do
-    {:ok, message}
-  end
-
   def filter_one(policy, message) do
     should_plug_history? =
       if function_exported?(policy, :history_awareness, 0) do