diff --git a/public/index.html b/public/index.html
index df06f2375..0235e211f 100755
--- a/public/index.html
+++ b/public/index.html
@@ -51,7 +51,7 @@
   <script src="%PUBLIC_URL%js/alex/moment.js"></script>
   <script src="https://gw.alipayobjects.com/os/lib/alipay/alex/2.0.19/bundle/alex.all.global.min.js"></script>
   <script src="https://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
-  <meta name="viewport" content="">
+  <meta name="viewport" content="width=device-width, user-scalable=no,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0">
   <%= htmlWebpackPlugin.tags.bodyTags %>
   <script>
     var _hmt = _hmt || [];
diff --git a/src/AppConfig.js b/src/AppConfig.js
index 326cfbb03..2b6b74135 100644
--- a/src/AppConfig.js
+++ b/src/AppConfig.js
@@ -25,7 +25,7 @@ if (isDev) {
   }
   debugType = window.location.search.indexOf('debug=t') !== -1 ? 'teacher' :
   window.location.search.indexOf('debug=s') !== -1 ? 'student' :
-  window.location.search.indexOf('debug=a') !== -1 ? 'admin' : parsed.debug || 'admin'
+  window.location.search.indexOf('debug=a') !== -1 ? 'admin' : parsed.debug || ''
 }                 
 window._debugType = debugType;
 export function initAxiosInterceptors(props) {