diff --git a/lib/pleroma/web/activity_pub/mrf/quiet_reply.ex b/lib/pleroma/web/activity_pub/mrf/quiet_reply.ex
index 52d92f267..ae5e2cdc7 100644
--- a/lib/pleroma/web/activity_pub/mrf/quiet_reply.ex
+++ b/lib/pleroma/web/activity_pub/mrf/quiet_reply.ex
@@ -3,6 +3,9 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.QuietReply do
+  @moduledoc """
+  QuietReply alters the scope of activities from local users when replying by enforcing them to be "Unlisted" or "Quiet Public". This delivers the activity to all the expected recipients and instances, but it will not be published in the Federated / The Whole Known Network timelines. It will still be published to the Home timelines of the user's followers and visible to anyone who opens the thread.
+  """
   require Pleroma.Constants
 
   alias Pleroma.User