diff --git a/core/misc/tabledrag.js b/core/misc/tabledrag.js
index f578d4a..347be11 100644
--- a/core/misc/tabledrag.js
+++ b/core/misc/tabledrag.js
@@ -1,4 +1,4 @@
-(function ($) {
+(function ($, Drupal, drupalSettings) {
 
 "use strict";
 
@@ -1244,8 +1244,10 @@ $.extend(Drupal.theme, {
     return '<div class="indentation">&nbsp;</div>';
   },
   tableDragChangedWarning: function () {
-    return '<div class="tabledrag-changed-warning messages warning" role="alert">' + Drupal.theme('tableDragChangedMarker') + ' ' + Drupal.t('Changes made in this table will not be saved until the form is submitted.') + '</div>';
+    var changeWarning = Drupal.t('Changes made in this table will not be saved until the form is submitted.');
+    Drupal.announce(changeWarning, 'assertive');
+    return '<div class="tabledrag-changed-warning messages warning" role="alert">' + Drupal.theme('tableDragChangedMarker') + ' ' + changeWarning + '</div>';
   }
 });
 
-})(jQuery);
+})(jQuery, Drupal, drupalSettings);
\ No newline at end of file