diff --git a/tpl/index b/tpl/index
index 935bc7c..b902777 100755
--- a/tpl/index
+++ b/tpl/index
@@ -56,7 +56,7 @@ cat <<EOH
   </head>
   <body class="${html_body_class:-index}">
     <header>
-      <h1 class="title"><a href="$url_root">$title</a></h1>
+      <h1 class="title"><a href="${url_root:-/}">$title</a></h1>
       <h2 class="desc">$desc</h2>
     </header>
     $html_pre_index
