diff --git a/app/assets/javascripts/discourse/controllers/reorder-categories.js.es6 b/app/assets/javascripts/discourse/controllers/reorder-categories.js.es6
index 0debb1e70..38ce60f4b 100644
--- a/app/assets/javascripts/discourse/controllers/reorder-categories.js.es6
+++ b/app/assets/javascripts/discourse/controllers/reorder-categories.js.es6
@@ -1,13 +1,18 @@
 import ModalFunctionality from 'discourse/mixins/modal-functionality';
 const BufferedProxy = window.BufferedProxy; // import BufferedProxy from 'ember-buffered-proxy/proxy';
 import { popupAjaxError } from 'discourse/lib/ajax-error';
-import computed from "ember-addons/ember-computed-decorators";
+import { on, default as computed } from "ember-addons/ember-computed-decorators";
 import Ember from 'ember';
 
 const SortableArrayProxy = Ember.ArrayProxy.extend(Ember.SortableMixin);
 
 export default Ember.Controller.extend(ModalFunctionality, Ember.Evented, {
 
+  @on('init')
+  _fixOrder() {
+    this.send('fixIndices');
+  },
+
   @computed("site.categories")
   categoriesBuffered(categories) {
     const bufProxy = Ember.ObjectProxy.extend(BufferedProxy);