diff --git a/litellm/proxy/openai_files_endpoints/files_endpoints.py b/litellm/proxy/openai_files_endpoints/files_endpoints.py
index 8b1aa7d20e6..686332deb27 100644
--- a/litellm/proxy/openai_files_endpoints/files_endpoints.py
+++ b/litellm/proxy/openai_files_endpoints/files_endpoints.py
@@ -1404,9 +1404,7 @@ async def list_files(
         _response = await proxy_logging_obj.post_call_success_hook(
             data=data, user_api_key_dict=user_api_key_dict, response=response
         )
-        if _response is not None and isinstance(
-            _response, (OpenAIFileObject, AsyncCursorPage)
-        ):
+        if _response is not None and isinstance(_response, (OpenAIFileObject, AsyncCursorPage)):
             response = _response
 
         ### ALERTING ###