diff --git a/portal/assets/themes/default/stylesheet.css b/portal/assets/themes/default/custom.css
similarity index 100%
rename from portal/assets/themes/default/stylesheet.css
rename to portal/assets/themes/default/custom.css
diff --git a/portal/assets/themes/vapor/stylesheet.css b/portal/assets/themes/vapor/custom.css
similarity index 100%
rename from portal/assets/themes/vapor/stylesheet.css
rename to portal/assets/themes/vapor/custom.css
diff --git a/portal/header.ms b/portal/header.ms
index 19fad10..a0f6701 100644
--- a/portal/header.ms
+++ b/portal/header.ms
@@ -13,7 +13,7 @@
 
   <!-- Stylesheets -->
   <link rel="stylesheet" href="assets/css/ynh-style.css">
-  <link rel="stylesheet" href="assets/themes/{{theme}}/stylesheet.css">
+  <link rel="stylesheet" href="assets/themes/{{theme}}/custom.css">
 
   <!-- Icons -->
   <link rel="shortcut icon" href="assets/icons/favicon.ico">