diff --git a/app/assets/javascripts/webchat-iframe.html.erb b/app/assets/javascripts/webchat-iframe.html.erb
index 006a2f6e1..02e5ecb0e 100644
--- a/app/assets/javascripts/webchat-iframe.html.erb
+++ b/app/assets/javascripts/webchat-iframe.html.erb
@@ -11,7 +11,7 @@
     'use strict';
 
     function isOfferOpen() {
-      var ribbonContainer = document.querySelector('#egofr-hmrc5-container');
+      var ribbonContainer = document.querySelector('#egofr-hmrc-container');
       return ribbonContainer && ribbonContainer.parentNode.style.visibility !== 'hidden';
     }