diff --git a/disable_messages.module b/disable_messages.module
index a0d9ccb..0c1ee47 100644
--- a/disable_messages.module
+++ b/disable_messages.module
@@ -5,7 +5,7 @@
  * The disable_messages module file.
  */
 
-use Drupal\Component\Utility\String;
+use Drupal\Component\Utility\Html;
 use Drupal\Core\Url;
 
 /**
@@ -158,7 +158,7 @@ function disable_message_pre_render_debug_output(&$elements) {
     $style = 'style="display:none;"';
   }
   $elements['#children'] = '<div id="disable_messages-debug-div" ' . $style . '> <pre>' .
-    String::checkPlain(var_export(disable_messages_cache_messages(), TRUE)) .
+    Html::escape(var_export(disable_messages_cache_messages(), TRUE)) .
     '</pre> </div>';
   return $elements;
 }