diff --git a/_layouts/default.html b/_layouts/default.html
index beb632b..0509935 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -11,6 +11,8 @@ layout: compress
 	<meta name="description" content="An easy guide to learn how to create mods for Minetest">
 	<meta name="keywords" content="Minetest, modding, book, tutorial, guide, easy">
 	<meta name="author" content="rubenwardy">
+	<meta name="flattr:id" content="gl763e">
+
 	<style>body,html,nav{background:#333}nav,nav li,nav li a{display:block}body,html,main,nav li{margin:0;padding:0}main,nav{position:absolute;top:0}body,html{font-size:17px;color:#000}#container{width:100%;max-width:1100px;margin:auto;position:relative}nav{left:0;width:280px;list-style:none;color:#fff}nav li a{padding:5px;color:#ccc;text-decoration:none}main{left:280px;right:0}article{background:#fff;padding:0 20px 20px}</style>
 	<link rel="stylesheet" href="{{ page.root }}/static/style.css">
 </head>