diff --git a/js/ui/closeDialog.js b/js/ui/closeDialog.js
index a0857298e..0e0dd2a74 100644
--- a/js/ui/closeDialog.js
+++ b/js/ui/closeDialog.js
@@ -41,9 +41,9 @@ export const CloseDialog = GObject.registerClass({
         let windowApp = tracker.get_window_app(this._window);
 
         /* Translators: %s is an application name */
-        let title = _('“%s” is not responding.').format(windowApp.get_name());
+        let title = _('“%s” Is Not Responding').format(windowApp.get_name());
         let description = _('You may choose to wait a short while for it to ' +
-                            'continue or force the app to quit entirely.');
+                            'continue or force the app to quit entirely');
         return new Dialog.MessageDialogContent({title, description});
     }