diff --git a/f7/app.py b/f7/app.py
index f6cab34..9897130 100644
--- a/f7/app.py
+++ b/f7/app.py
@@ -101,7 +101,7 @@ class _App:
             f7.udplog.error('dispatch request ' + str(e))
             request.write(json.dumps({
                 'errcode': 200,
-                'errmsg': '服务内部错误',
+                'errmsg': 'server internal error',
             }))
 
     def __selfChecking(self, request):