diff --git a/source/_layouts/default.html.twig b/source/_layouts/default.html.twig
index d736d3e3..bba1d775 100644
--- a/source/_layouts/default.html.twig
+++ b/source/_layouts/default.html.twig
@@ -14,7 +14,7 @@
             {{ include('og', { og: page.meta.og }) }}
         {% endif %}
 
-        <meta lang="{{ site.html_lang }}" charset="utf-8">
+        <meta lang="{{ site.locale }}" charset="utf-8">
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=device-width, initial-scale=1">