diff --git a/locales/en-US/browser/browser/preferences/zen-preferences.ftl b/locales/en-US/browser/browser/preferences/zen-preferences.ftl
index ab910a806..e4b18d637 100644
--- a/locales/en-US/browser/browser/preferences/zen-preferences.ftl
+++ b/locales/en-US/browser/browser/preferences/zen-preferences.ftl
@@ -353,3 +353,4 @@ zen-devtools-toggle-storage-shortcut = Toggle Storage
 zen-devtools-toggle-dom-shortcut = Toggle DOM
 zen-devtools-toggle-accessibility-shortcut = Toggle Accessibility
 zen-close-all-unpinned-tabs-shortcut = Close All Unpinned Tabs
+zen-new-unsynced-window-shortcut = New Unsynced Window