diff --git a/app/assets/javascripts/radioSelect.js b/app/assets/javascripts/radioSelect.js
index 802382736..02b2afc18 100644
--- a/app/assets/javascripts/radioSelect.js
+++ b/app/assets/javascripts/radioSelect.js
@@ -1,7 +1,10 @@
-(function(Modules) {
+(function(global) {
 
   "use strict";
 
+  var Modules = global.GOVUK.Modules;
+  var Hogan = global.Hogan;
+
   let states = {
     'initial': Hogan.compile(`
       <div class="radio-select-column">
@@ -151,4 +154,4 @@
 
   };
 
-})(window.GOVUK.Modules);
+})(window);