diff --git a/metagpt/provider/openai_api.py b/metagpt/provider/openai_api.py
index bd9c02231f..02dad2f89f 100644
--- a/metagpt/provider/openai_api.py
+++ b/metagpt/provider/openai_api.py
@@ -80,8 +80,8 @@ def _get_proxy_params(self) -> dict:
         params = {}
         if self.config.proxy:
             params = {"proxies": self.config.proxy}
-            if self.config.base_url:
-                params["base_url"] = self.config.base_url
+        if self.config.base_url:
+            params["base_url"] = self.config.base_url
 
         return params