diff --git a/app/views/full-page-examples/start-page/index.njk b/app/views/full-page-examples/start-page/index.njk
index 69d8587ebe..a0cb3c1b88 100644
--- a/app/views/full-page-examples/start-page/index.njk
+++ b/app/views/full-page-examples/start-page/index.njk
@@ -49,7 +49,8 @@ notes: The buttons and links on this page are not functional.
       {{ govukButton({
         text: "Start now",
         href: "#",
-        classes: "govuk-button--start govuk-!-margin-top-2 govuk-!-margin-bottom-8"
+        classes: "govuk-!-margin-top-2 govuk-!-margin-bottom-8",
+        isStartButton: true
       }) }}
 
       {% set moreInformationHTML %}