diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 0ebb49dc0..5f5ed7b8e 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -448,6 +448,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       data =
         data
         |> Map.put("object", object)
+        |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
 
       IO.inspect(data)