diff --git a/mymodule/themes/fancytheme/default/base.twig b/mymodule/themes/fancytheme/default/base.twig
index 1b148ce0f967913876fcccae910f08341f4d5c58..16034b3fa0ac3467bb2a042e7053083af4dd5b33 100644
--- a/mymodule/themes/fancytheme/default/base.twig
+++ b/mymodule/themes/fancytheme/default/base.twig
@@ -5,7 +5,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
     <meta name="viewport" content="initial-scale=1.0">
     <title>{{ pagetitle }}</title>
-    <link rel="stylesheet" href="{{baseurlpath}}module.php/mymodule/stylesheet.css">
+    <link rel="stylesheet" href="{{ asset("css/stylesheet.css") }}">
     <link rel="stylesheet" href="/css/bootstrap.min.css">
     <link rel="stylesheet" href="/css/m4lab.css">
     <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay" crossorigin="anonymous">