diff --git a/templates/base.mako b/templates/base.mako
index 8764660488f4937dd669b9262f6d1e3bc3c1a751..c67617e299456c79960c59e70a9440d028aec7ac 100644
--- a/templates/base.mako
+++ b/templates/base.mako
@@ -7,7 +7,7 @@
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
 <link href="/common/kwant.css" rel="stylesheet" type="text/css" />
 <title><%block name="title">kwant: quantum transport simulation package</%block></title>
-<link rel="icon" href="/common/kwant_icon.png" type="image/png">
+<link rel="icon" href="/common/kwant_icon.png" type="image/png" />
 <%block name="extra_head" />\
 </head>