diff --git a/backend/open_webui/routers/openai.py b/backend/open_webui/routers/openai.py
index b0f283c82d..cf75bc425a 100644
--- a/backend/open_webui/routers/openai.py
+++ b/backend/open_webui/routers/openai.py
@@ -763,6 +763,7 @@ def get_azure_allowed_params(api_version: str) -> set[str]:
         "response_format",
         "seed",
         "max_completion_tokens",
+        "reasoning_effort",
     }
 
     try: