diff --git a/public/js/cover.js b/public/js/cover.js
index 2f35bd282..ee7d75e4b 100644
--- a/public/js/cover.js
+++ b/public/js/cover.js
@@ -9,6 +9,7 @@ var urlpath = common.urlpath;
 var resetCheckAuth = common.resetCheckAuth;
 var getLoginState = common.getLoginState;
 var clearLoginState = common.clearLoginState;
+var loginStateChangeEvent = common.loginStateChangeEvent;
 
 var historyModule = require('./history');
 var parseStorageToHistory = historyModule.parseStorageToHistory;
diff --git a/public/js/index.js b/public/js/index.js
index 96580fe37..4a4662459 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -29,6 +29,7 @@ var DROPBOX_APP_KEY = common.DROPBOX_APP_KEY;
 var noteurl = common.noteurl;
 
 var checkLoginStateChanged = common.checkLoginStateChanged;
+var loginStateChangeEvent = common.loginStateChangeEvent;
 
 var extra = require('./extra');
 var md = extra.md;