diff --git a/framework/core/stubs/extension/js/bootstrap.js b/framework/core/stubs/extension/js/bootstrap.js
index 5643a6449..421294ea7 100644
--- a/framework/core/stubs/extension/js/bootstrap.js
+++ b/framework/core/stubs/extension/js/bootstrap.js
@@ -1,4 +1,5 @@
 import { extend, override } from 'flarum/extension-utils';
+import app from 'flarum/app';
 
 app.initializers.add('{{name}}', function() {