diff --git a/openslides_backend/migrations/migrations/0054_split_mediafile_model.py b/openslides_backend/migrations/migrations/0054_split_mediafile_model.py
index f06958ec7..f356d2d51 100644
--- a/openslides_backend/migrations/migrations/0054_split_mediafile_model.py
+++ b/openslides_backend/migrations/migrations/0054_split_mediafile_model.py
@@ -114,7 +114,8 @@ def migrate_models(self) -> list[BaseRequestEvent] | None:
             )
             for id_, model in models.items():
                 if (
-                    collection_from_fqid(fqid := model["content_object_id"])
+                    model.get("content_object_id")
+                    and collection_from_fqid(fqid := model["content_object_id"])
                     == "mediafile"
                 ):
                     events.append(
diff --git a/tests/system/migrations/test_0054_split_mediafile_model.py b/tests/system/migrations/test_0054_split_mediafile_model.py
index 3ba25dea7..2507cbf72 100644
--- a/tests/system/migrations/test_0054_split_mediafile_model.py
+++ b/tests/system/migrations/test_0054_split_mediafile_model.py
@@ -145,6 +145,11 @@ def test_migration(write, finalize, assert_model):
             "fqid": "projection/1",
             "fields": {"id": 1, "meeting_id": 2, "content_object_id": "mediafile/5"},
         },
+        {
+            "type": "create",
+            "fqid": "projection/2",
+            "fields": {"id": 2, "meeting_id": 2, "content_object_id": None},
+        },
         {
             "type": "create",
             "fqid": "mediafile/6",