diff --git a/litellm/proxy/utils.py b/litellm/proxy/utils.py
index 6421d2ca704..2cd2b1d93bd 100644
--- a/litellm/proxy/utils.py
+++ b/litellm/proxy/utils.py
@@ -292,7 +292,7 @@ _CALLBACK_ACCEPTS_CALL_INFO: Dict[int, bool] = {}
 
 
 def _accepts_litellm_call_info(cb: CustomLogger) -> bool:
-    key = id(cb)
+    key = id(type(cb))
     if key not in _CALLBACK_ACCEPTS_CALL_INFO:
         sig = inspect.signature(cb.async_post_call_response_headers_hook)
         _CALLBACK_ACCEPTS_CALL_INFO[key] = "litellm_call_info" in sig.parameters