diff --git a/litellm/llms/gemini/interactions/transformation.py b/litellm/llms/gemini/interactions/transformation.py
index 8271dd7c35e..b18b6a28ce4 100644
--- a/litellm/llms/gemini/interactions/transformation.py
+++ b/litellm/llms/gemini/interactions/transformation.py
@@ -186,9 +186,13 @@ class GoogleAIStudioInteractionsConfig(BaseInteractionsAPIConfig):
             response_format = optional_params.get("response_format")
             response_mime_type = optional_params.get("response_mime_type")
 
-            if response_mime_type and not isinstance(response_format, list) and (
-                not isinstance(response_format, dict)
-                or "mime_type" not in response_format
+            if (
+                response_mime_type
+                and not isinstance(response_format, list)
+                and (
+                    not isinstance(response_format, dict)
+                    or "mime_type" not in response_format
+                )
             ):
                 # Wrap the legacy schema into the new polymorphic format.
                 new_rf: Dict[str, Any] = {