diff --git a/docs/_templates/footer.html b/docs/_templates/footer.html
index 0e85bc9c..b10e6ac0 100644
--- a/docs/_templates/footer.html
+++ b/docs/_templates/footer.html
@@ -1,7 +1,7 @@
 {% extends "!footer.html" %}
 
 {% block extrafooter %}
-<link rel="stylesheet" href="_static/extra.css" type="text/css" />
+<link rel="stylesheet" href="{{ pathto('_static/extra.css', 1) }}" type="text/css" />
 <header id="pionav" class="navbar navbar-inverse navbar-fixed-top">
   <div class="container container-fluid">
     <div class="navbar-header">
@@ -28,4 +28,4 @@
   </div>
 </header>
 {{ super() }}
-{% endblock %}
\ No newline at end of file
+{% endblock %}