diff --git a/litellm/llms/vertex_ai/vertex_gemma_models/transformation.py b/litellm/llms/vertex_ai/vertex_gemma_models/transformation.py
index 23dbabeaac7..c40c2d20aa0 100644
--- a/litellm/llms/vertex_ai/vertex_gemma_models/transformation.py
+++ b/litellm/llms/vertex_ai/vertex_gemma_models/transformation.py
@@ -189,7 +189,7 @@ class VertexGemmaConfig(OpenAIGPTConfig):
         logging_obj: Any,
         optional_params: dict,
         litellm_params: dict,
-        client= Optional[Any] = None,
+        client= Any = None,
         timeout: Optional[Union[float, httpx.Timeout]]= None,
         encoding: Any= None,
     ):