diff --git a/templates/layout.html b/templates/layout.html
index 6e73880..09fc9f3 100644
--- a/templates/layout.html
+++ b/templates/layout.html
@@ -6,7 +6,7 @@
     <title>Reynir 网 - {{ title }}</title>
     <link rel="stylesheet" type="text/css" href="/css/default.css" />
     <link rel="me" value="https://bsd.network/@reynir" />
-    {{ head_extra|safe }}
+    {{ head_extra or ""|safe }}
   </head>
   <body>
     <header>
