diff --git a/README.md b/README.md
index f9cfbf1..1d5e727 100755
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ class WechatController extends Controller
 
         Log::info('return response.');
 
-        return $server->serve();
+        return $wechat->server->serve();
     }
 }
 ```