diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index 21c63b5c3..ffbec6d83 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -82,8 +82,10 @@ class DisplayChangeDialog extends ModalDialog.ModalDialog {
     }
 
     _formatCountDown() {
-        let fmt = ngettext("Settings changes will revert in %d second",
-                           "Settings changes will revert in %d seconds");
+        const fmt = ngettext(
+            'Settings changes will revert in %d second',
+            'Settings changes will revert in %d seconds',
+            this._countDown);
         return fmt.format(this._countDown);
     }