diff --git a/static/timeslider.html b/static/timeslider.html
index b5f86be1..20af7184 100644
--- a/static/timeslider.html
+++ b/static/timeslider.html
@@ -1,9 +1,8 @@
 <!doctype html>
-<html>
+<html lang="en">
 <head>
   <meta charset="utf-8">
-  <meta http-equiv="Content-Language" content="en-us" />
-  <meta name="ROBOTS" content="NOINDEX, NOFOLLOW" />
+  <meta name="robots" content="noindex, nofollow">
 
   <title>Etherpad Lite Timeslider</title>
   <link rel="stylesheet" href="../../static/css/pad_lite.css">
