diff --git a/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex b/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
index de00b23da..74da8d57e 100644
--- a/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
@@ -31,4 +31,6 @@ def filter(%{"type" => message_type} = message) do
   end
 
   def filter(message), do: {:ok, message}
+
+  def describe, do: {:ok, %{mrf_vocabulary: Pleroma.Config.get(:mrf_vocabulary)}}
 end