diff --git a/_includes/header.html b/_includes/header.html
index ad562c3c..d5b4e2fc 100644
--- a/_includes/header.html
+++ b/_includes/header.html
@@ -19,7 +19,7 @@
         <li class="divider-vertical"></li>
         <li><a href="#contact">Kontakt</a></li>
         <li class="divider-vertical"></li>
-        <li><a href="http://wiki.chaospott.de">Wiki</a></li>
+        <li><a href="https://wiki.chaospott.de">Wiki</a></li>
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <script>