diff --git a/litellm/utils.py b/litellm/utils.py
index b386a54ec55..165d5c09383 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -8786,7 +8786,7 @@ class CustomStreamWrapper:
             if (
                 "litellm_param_is_function_call" in logging_obj.optional_params
                 and logging_obj.optional_params["litellm_param_is_function_call"]
-                is not None
+                is True
             ):
                 return True