diff --git a/web/app/assets/javascripts/clientUpdate.js b/web/app/assets/javascripts/clientUpdate.js
index 5df2ce32e..56f7ce8ee 100644
--- a/web/app/assets/javascripts/clientUpdate.js
+++ b/web/app/assets/javascripts/clientUpdate.js
@@ -115,10 +115,13 @@
       var timer = setInterval(function(){
         var $countdown = $('#client_update .countdown-secs');
         var countdown = parseInt($countdown.text());
-        $countdown.text(countdown - 1);
-        if(countdown == 0) {
+
+        if(countdown <= 0) {
           clearInterval(timer);
         }
+        else {
+          $countdown.text(countdown - 1);
+        }
       }, rounded * 1000);
 
       updateClientUpdateDialog("update-restarting", {countdown: rounded, os: context.JK.GetOSAsString()});