diff --git a/litellm/router.py b/litellm/router.py
index 427d119527e..63976975b9a 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -12412,7 +12412,6 @@ class Router(DeprecatedRouterMembers):
         return None
 
     def _core_routable_model_group(self, model_name: str) -> str:
-
         """
         The model group a request to model_name routes to: its target when
         model_name is a `model_group_alias`, else model_name itself.