diff --git a/platform/common/vapi-background.js b/platform/common/vapi-background.js
index 6b8509e2e..cc27515c8 100644
--- a/platform/common/vapi-background.js
+++ b/platform/common/vapi-background.js
@@ -812,7 +812,7 @@ vAPI.setIcon = (( ) => {
 browser.browserAction.onClicked.addListener(function(tab) {
     vAPI.tabs.open({
         select: true,
-        url: 'popup-fenix.html?tabId=' + tab.id + '&responsive=1'
+        url: `popup-fenix.html?tabId=${tab.id}&responsive=1`,
     });
 });