diff --git a/app/assets/javascripts/timeoutPopup.js b/app/assets/javascripts/timeoutPopup.js
index c3831d96a..a57641b5e 100644
--- a/app/assets/javascripts/timeoutPopup.js
+++ b/app/assets/javascripts/timeoutPopup.js
@@ -51,7 +51,7 @@ window.GOVUK.Modules.TimeoutPopup = window.GOVUK.Modules.TimeoutPopup || {};
     }
 
     if (document.getElementById("timeLeft") !== null) {
-        setTimeout(setSessionTimer, 60 * 1000);
+        setTimeout(setSessionTimer, 25 * 60 * 1000);
     }
 
     global.GOVUK.Modules.TimeoutPopup.checkTimer = checkTimer;