diff --git a/backend/open_webui/utils/middleware.py b/backend/open_webui/utils/middleware.py
index 0cb0f2b6d9..523c8bff8b 100644
--- a/backend/open_webui/utils/middleware.py
+++ b/backend/open_webui/utils/middleware.py
@@ -4041,7 +4041,7 @@ async def background_tasks_handler(ctx):
             await review_memory_after_turn(
                 request=request,
                 user=user,
-                model=ctx['model'],
+                model=ctx.get('model'),
                 metadata=metadata,
                 form_data=form_data,
                 assistant_message=ctx.get('assistant_message') or {},