diff --git a/index.html b/index.html
index b8fc473676..488c10f898 100644
--- a/index.html
+++ b/index.html
@@ -1,6 +1,6 @@
 
 <!DOCTYPE html>
-<html>
+<html lang="en">
 
 <head>
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
