diff --git a/404.html b/404.html
new file mode 100644
index 0000000..8f4945c
--- /dev/null
+++ b/404.html
@@ -0,0 +1,6 @@
+---
+layout: default
+title: Fiozera - um monte de fio
+---
+
+<h1>Página não encontrada</h1>
diff --git a/_layouts/default.html b/_layouts/default.html
index 2ea6da5..1619e7c 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -36,7 +36,7 @@
     <div class="container">
       <div id="sitemap">
         <ul>
-      		<li><a href="sobre.html">Sobre</a></li>
+      		<li><a href="/sobre.html">Sobre</a></li>
       		<li><a href="mailto:hello@fiozera.com.br">Email</a></li>
       		<li><a href="http://www.flickr.com/photos/31191765@N00">Flickr</a></li>
       		<li><a href="http://www.github.com/fiozera">Github</a></li>