diff --git a/litellm/responses/main.py b/litellm/responses/main.py
index d145f8cc6b8..fb38162e1d9 100644
--- a/litellm/responses/main.py
+++ b/litellm/responses/main.py
@@ -2370,6 +2370,7 @@ async def _aresponses_websocket(
         dynamic_api_base,
     ) = litellm.get_llm_provider(
         model=model,
+        custom_llm_provider=litellm_params.custom_llm_provider,
         api_base=api_base,
         api_key=api_key,
     )