diff --git a/backend/open_webui/models/auths.py b/backend/open_webui/models/auths.py
index dad93dc4bd..0ea1dd412e 100644
--- a/backend/open_webui/models/auths.py
+++ b/backend/open_webui/models/auths.py
@@ -146,7 +146,11 @@ class AuthsTable:
     def authenticate_user_by_api_key(
         self, api_key: str, db: Optional[Session] = None
     ) -> Optional[UserModel]:
-        log.info(f"authenticate_user_by_api_key: ...{api_key[-4:]}" if api_key else "authenticate_user_by_api_key: <empty>")
+        log.info(
+            f"authenticate_user_by_api_key: ...{api_key[-4:]}"
+            if api_key
+            else "authenticate_user_by_api_key: <empty>"
+        )
         # if no api_key, return None
         if not api_key:
             return None