diff --git a/app/assets/javascripts/commons/polyfills.js b/app/assets/javascripts/commons/polyfills.js
index cb054a2a197..bc3e741f524 100644
--- a/app/assets/javascripts/commons/polyfills.js
+++ b/app/assets/javascripts/commons/polyfills.js
@@ -1,5 +1,6 @@
 // ECMAScript polyfills
 import 'core-js/fn/array/find';
+import 'core-js/fn/array/find-index';
 import 'core-js/fn/array/from';
 import 'core-js/fn/array/includes';
 import 'core-js/fn/object/assign';