diff --git a/services/web/public/src/ide/history/HistoryManager.js b/services/web/public/src/ide/history/HistoryManager.js
index 03f84216c7..fd703037b6 100644
--- a/services/web/public/src/ide/history/HistoryManager.js
+++ b/services/web/public/src/ide/history/HistoryManager.js
@@ -19,6 +19,7 @@ define([
   'moment',
   'ide/colors/ColorManager',
   'ide/history/util/displayNameForUser',
+  'ide/history/controllers/HistoryCompareController',
   'ide/history/controllers/HistoryListController',
   'ide/history/controllers/HistoryDiffController',
   'ide/history/directives/infiniteScroll'