diff --git a/disable_messages.module b/disable_messages.module
index 63d4c91..1282ae6 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;
 
 /**
  * Implements hook_preprocess_HOOK().
@@ -156,7 +156,7 @@
     $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;
 }