diff --git a/xinference/api/restful_api.py b/xinference/api/restful_api.py
index db27110872..76cc890519 100644
--- a/xinference/api/restful_api.py
+++ b/xinference/api/restful_api.py
@@ -169,7 +169,7 @@ def init_auth_config(auth_config_file: Optional[str]):
             )
             for user in config.user_config:
                 user.password = get_password_hash(user.password)
-            common.XINFERENCE_OAUTH2_CONFIG = config
+            common.XINFERENCE_OAUTH2_CONFIG = config  # type: ignore
             return config
 
     def is_authenticated(self):