diff --git a/src/components/sw-toolbox.js b/src/components/sw-toolbox.js
index 4012aa0..4b11fd0 100644
--- a/src/components/sw-toolbox.js
+++ b/src/components/sw-toolbox.js
@@ -10,31 +10,33 @@ if ('serviceWorker' in navigator) {
     let registration;
 
     const showSkipWaitingPrompt = (event) => {
-      Swal.fire({
-        position: 'bottom-end',
-        backdrop: false,
-        title: "",
-        text: hubl.intl.t('serviceWorker.newUpdate') + ". " + hubl.intl.t('serviceWorker.wantToUpdate'),
-        imageUrl: hubl.client.logo || 'https://cdn.startinblox.com/logos/webp/hubl.webp',
-        imageAlt: hubl.client.name,
-        showCancelButton: true,
-        confirmButtonClass: 'button text-xsmall text-bold text-center reversed color-secondary bordered icon icon-check no-background-image',
-        cancelButtonClass: 'button text-xsmall text-bold text-center reversed color-primary bordered icon icon-exclamation no-background-image',
-        confirmButtonText: hubl.intl.t('serviceWorker.yes'),
-        cancelButtonText: hubl.intl.t('serviceWorker.no')
-      }).then((result) => {
-        if (result.isConfirmed) {
-          wb.addEventListener('controlling', (event) => {
-            window.location.reload();
-          });
-
-          if (registration && registration.waiting) {
-            messageSW(registration.waiting, {
-              type: 'SKIP_WAITING'
+      if(hubl.intl.t('serviceWorker.newUpdate') != undefined) {
+        Swal.fire({
+          position: 'bottom-end',
+          backdrop: false,
+          title: "",
+          text: hubl.intl.t('serviceWorker.newUpdate') + ". " + hubl.intl.t('serviceWorker.wantToUpdate'),
+          imageUrl: hubl.client.logo || 'https://cdn.startinblox.com/logos/webp/hubl.webp',
+          imageAlt: hubl.client.name,
+          showCancelButton: true,
+          confirmButtonClass: 'button text-xsmall text-bold text-center reversed color-secondary bordered icon icon-check no-background-image',
+          cancelButtonClass: 'button text-xsmall text-bold text-center reversed color-primary bordered icon icon-exclamation no-background-image',
+          confirmButtonText: hubl.intl.t('serviceWorker.yes'),
+          cancelButtonText: hubl.intl.t('serviceWorker.no')
+        }).then((result) => {
+          if (result.isConfirmed) {
+            wb.addEventListener('controlling', (event) => {
+              window.location.reload();
             });
+
+            if (registration && registration.waiting) {
+              messageSW(registration.waiting, {
+                type: 'SKIP_WAITING'
+              });
+            }
           }
-        }
-      });
+        });
+      }
     };
 
     wb.addEventListener('waiting', showSkipWaitingPrompt);