diff --git a/docs/users_guide/rtd-theme/layout.html b/docs/users_guide/rtd-theme/layout.html
index 2a61142..7ffeff7 100644
--- a/docs/users_guide/rtd-theme/layout.html
+++ b/docs/users_guide/rtd-theme/layout.html
@@ -64,7 +64,7 @@
   {%- endif %}
 
   {# CSS #}
-  <link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}" type="text/css" />
+  <link rel="stylesheet" href="{{ pathto('_static/' + styles[-1], 1) }}" type="text/css" />
   <link rel="stylesheet" href="{{ pathto('_static/pygments.css', 1) }}" type="text/css" />
   {%- for css in css_files %}
     {%- if css|attr("rel") %}