diff --git a/src/pipecat/services/openai.py b/src/pipecat/services/openai.py
index c631fd8c0..3f85d917c 100644
--- a/src/pipecat/services/openai.py
+++ b/src/pipecat/services/openai.py
@@ -503,7 +503,6 @@ class OpenAITTSService(TTSService):
         *,
         api_key: Optional[str] = None,
         base_url: Optional[str] = None,
-        websocket_base_url: Optional[str] = None,
         voice: str = "alloy",
         model: str = "gpt-4o-mini-tts",
         sample_rate: Optional[int] = None,
@@ -520,9 +519,7 @@ class OpenAITTSService(TTSService):
         self.set_model_name(model)
         self.set_voice(voice)
         self._instructions = instructions
-        self._client = AsyncOpenAI(
-            api_key=api_key, base_url=base_url, websocket_base_url=websocket_base_url
-        )
+        self._client = AsyncOpenAI(api_key=api_key, base_url=base_url)
 
     def can_generate_metrics(self) -> bool:
         return True