diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 93219d76a..464832a1e 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -30,7 +30,7 @@ defp check_actor_is_active(actor) do
   end
 
   def insert(map, local \\ true) when is_map(map) do
-    with nil <- Activity.get_by_ap_id(map["id"]),
+    with nil <- Activity.normalize(map),
          map <- lazy_put_activity_defaults(map),
          :ok <- check_actor_is_active(map["actor"]),
          {:ok, map} <- MRF.filter(map),
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 8b5c85f42..9d7c64743 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -460,14 +460,7 @@ def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = obj
   # Mastodon Accept/Reject requires a non-normalized object containing the actor URIs,
   # because of course it does.
   def prepare_outgoing(%{"type" => "Accept"} = data) do
-    follow_activity_id =
-      if is_binary(data["object"]) do
-        data["object"]
-      else
-        data["object"]["id"]
-      end
-
-    with follow_activity <- Activity.get_by_ap_id(follow_activity_id) do
+    with follow_activity <- Activity.normalize(data["object"]) do
       object = %{
         "actor" => follow_activity.actor,
         "object" => follow_activity.data["object"],
@@ -485,14 +478,7 @@ def prepare_outgoing(%{"type" => "Accept"} = data) do
   end
 
   def prepare_outgoing(%{"type" => "Reject"} = data) do
-    follow_activity_id =
-      if is_binary(data["object"]) do
-        data["object"]
-      else
-        data["object"]["id"]
-      end
-
-    with follow_activity <- Activity.get_by_ap_id(follow_activity_id) do
+    with follow_activity <- Activity.normalize(data["object"]) do
       object = %{
         "actor" => follow_activity.actor,
         "object" => follow_activity.data["object"],