diff --git a/public/ng/js/gogs.js b/public/ng/js/gogs.js
index 64bf42f34..5e1d8ebd2 100644
--- a/public/ng/js/gogs.js
+++ b/public/ng/js/gogs.js
@@ -616,7 +616,7 @@ function initProfile() {
 }
 
 $(document).ready(function () {
-    Gogs.AppSubUrl = $('head').data('suburl');
+    Gogs.AppSubUrl = $('head').data('suburl') || '';
     initCore();
     if ($('#user-profile-setting').length) {
         initUserSetting();