diff --git a/public/javascripts/wechat/app.js b/public/javascripts/wechat/app.js
index 4d2d71dd7..119e962d1 100644
--- a/public/javascripts/wechat/app.js
+++ b/public/javascripts/wechat/app.js
@@ -10,7 +10,7 @@ app.factory('auth', function($http,$routeParams, $cookies){
     }
 
     var getOpenId = function(cb) {
-        if (typeof _openid !== 'undefined' || _openid.length > 0) {
+        if (typeof _openid !== 'undefined' && _openid.length > 0) {
             cb(_openid);
             return;
         }