diff --git templates/maintenance-page.tpl.php templates/maintenance-page.tpl.php
index 31de3bb..569ba37 100644
--- templates/maintenance-page.tpl.php
+++ templates/maintenance-page.tpl.php
@@ -11,9 +11,8 @@
  * @see template_preprocess_maintenance_page()
  */
 ?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>">
+<!DOCTYPE html>
+<html lang="<?php print $language->language; ?>" dir="<?php print $language->dir; ?>"<?php print $rdf_namespaces; ?>>
 
 <head>
   <title><?php print $head_title; ?></title>
