diff --git a/bookwyrm/models/activitypub_mixin.py b/bookwyrm/models/activitypub_mixin.py
index 3e9e1940..f287b752 100644
--- a/bookwyrm/models/activitypub_mixin.py
+++ b/bookwyrm/models/activitypub_mixin.py
@@ -369,16 +369,6 @@ class OrderedCollectionMixin(OrderedCollectionPageMixin):
         if self.user.local and broadcast:
             self.broadcast(activity, self.user)
 
-    def to_delete_activity(self, user):
-        """notice of deletion"""
-        return activitypub.Delete(
-            id=self.remote_id + "/activity",
-            actor=user.remote_id,
-            to=["%s/followers" % user.remote_id],
-            cc=["https://www.w3.org/ns/activitystreams#Public"],
-            object=self.remote_id,
-        ).serialize()
-
 
 class CollectionItemMixin(ActivitypubMixin):
     """for items that are part of an (Ordered)Collection"""
diff --git a/bookwyrm/tests/views/inbox/test_inbox_delete.py b/bookwyrm/tests/views/inbox/test_inbox_delete.py
index fef5ce51..c40f7a33 100644
--- a/bookwyrm/tests/views/inbox/test_inbox_delete.py
+++ b/bookwyrm/tests/views/inbox/test_inbox_delete.py
@@ -142,7 +142,7 @@ class InboxActivities(TestCase):
             "type": "Delete",
             "actor": "https://example.com/users/test-user",
             "to": ["https://www.w3.org/ns/activitystreams#Public"],
-            "object": book_list.remote_id,
+            "object": {"id": book_list.remote_id, "type": "List"}
         }
         views.inbox.activity_task(activity)
         self.assertFalse(models.List.objects.exists())
diff --git a/bookwyrm/tests/views/test_list_actions.py b/bookwyrm/tests/views/test_list_actions.py
index e268905d..8ebeea28 100644
--- a/bookwyrm/tests/views/test_list_actions.py
+++ b/bookwyrm/tests/views/test_list_actions.py
@@ -90,7 +90,7 @@ class ListActionViews(TestCase):
         activity = json.loads(mock.call_args[0][1])
         self.assertEqual(activity["type"], "Delete")
         self.assertEqual(activity["actor"], self.local_user.remote_id)
-        self.assertEqual(activity["object"], self.list.remote_id)
+        self.assertEqual(activity["object"]["id"], self.list.remote_id)
 
         self.assertEqual(mock.call_count, 1)
         self.assertFalse(models.List.objects.exists())