diff --git a/templates/mano.html b/templates/mano.html
index 163797e..9698ea4 100644
--- a/templates/mano.html
+++ b/templates/mano.html
@@ -1,5 +1,5 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
+<!DOCTYPE html>
+<html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 <title><% title %></title>
