diff --git a/providers/gemini.py b/providers/gemini.py
index 2386c5a..b656ca1 100644
--- a/providers/gemini.py
+++ b/providers/gemini.py
@@ -121,7 +121,7 @@ class GeminiModelProvider(ModelProvider):
         super().__init__(api_key, **kwargs)
         self._client = None
         self._token_counters = {}  # Cache for token counting
-        self._base_url = kwargs.get('base_url', None)  # Optional custom endpoint
+        self._base_url = kwargs.get("base_url", None)  # Optional custom endpoint
 
     @property
     def client(self):