diff --git a/app/assets/javascripts/main.js b/app/assets/javascripts/main.js
index b130c050b..6a918241d 100644
--- a/app/assets/javascripts/main.js
+++ b/app/assets/javascripts/main.js
@@ -1,5 +1,5 @@
 // Initialize GOV.UK Frontend components (modern init)
-window.GOVUKFrontend.initAll();
+window.GOVUK.Frontend?.initAll?.();
 
 var showHideContent = new GOVUK.ShowHideContent();
 showHideContent.init();