2 files changed, 13 insertions, 5 deletions
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index ec161074d..5f11b8410 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -145,9 +145,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def unannounce(%User{} = actor, %Object{} = object, local \\ true) do
+  def unannounce(
+        %User{} = actor,
+        %Object{} = object,
+        local \\ true,
+        activity_id \\ nil
+      ) do
     with %Activity{} = activity <- get_existing_announce(actor.ap_id, object),
-         unannounce_data <- make_unannounce_data(actor, activity),
+         unannounce_data <- make_unannounce_data(actor, activity, activity_id),
          {:ok, unannounce_activity} <- insert(unannounce_data, local),
          :ok <- maybe_federate(activity),
          {:ok, _activity} <- Repo.delete(activity),
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index c9d0e45b2..f98545336 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -284,16 +284,19 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   """
   def make_unannounce_data(
         %User{ap_id: ap_id} = user,
-        %Activity{data: %{"id" => id, "context" => context}} = activity
+        %Activity{data: %{"context" => context}} = activity,
+        activity_id
       ) do
-    %{
+    data = %{
       "type" => "Undo",
       "actor" => ap_id,
-      "object" => id,
+      "object" => activity.data,
       "to" => [user.follower_address, activity.data["actor"]],
       "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
       "context" => context
     }
+
+    if activity_id, do: Map.put(data, "id", activity_id), else: data
   end
 
   def add_announce_to_object(%Activity{data: %{"actor" => actor}}, object) do