diff --git a/source/layouts/layout.haml b/source/layouts/layout.haml
index 49cd8cd..438f2d7 100644
--- a/source/layouts/layout.haml
+++ b/source/layouts/layout.haml
@@ -1,5 +1,5 @@
 !!! 5
-%html
+%html{lang: (current_page.data.lang || 'en')}
   %head
     %title= page_title
     %meta{name: :description, content: page_description}