diff --git a/templates/base.html b/templates/base.html
index 2470da3..748d99c 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -34,7 +34,7 @@
   <link rel="stylesheet" type="text/css" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/font-awesome/css/solid.css">
 
   {% if CUSTOM_CSS %}
-    <link href="{{ SITEURL }}/{{ CUSTOM_CSS }}" rel="stylesheet">
+    <link href="{{ main_siteurl }}/{{ CUSTOM_CSS }}" rel="stylesheet">
   {% endif %}
 
   {% if FEED_ALL_ATOM %}