diff --git a/app/design/adminhtml/default/default/layout/main.xml b/app/design/adminhtml/default/default/layout/main.xml
index 3e31e7553..986ec85f8 100644
--- a/app/design/adminhtml/default/default/layout/main.xml
+++ b/app/design/adminhtml/default/default/layout/main.xml
@@ -60,7 +60,6 @@ Default layout, loads most of the pages
 
                 <action method="addCss"><name>reset.css</name></action>
                 <action method="addCss"><name>boxes.css</name></action>
-                <action method="addCss"><name>custom.css</name></action>
                 <action method="addCss"><name>print.css</name><params>media="print"</params></action>
                 <action method="addItem"><type>skin_css</type><name>menu.css</name><params>media="screen, projection"</params></action>
                 <action method="addItem"><type>skin_css</type><name>override.css</name></action>
diff --git a/public/skin/adminhtml/default/default/custom.css b/public/skin/adminhtml/default/default/custom.css
deleted file mode 100644
index 3f09e235a..000000000
--- a/public/skin/adminhtml/default/default/custom.css
+++ /dev/null
@@ -1,10 +0,0 @@
-/**
- * Maho
- *
- * @category    design
- * @package     default_default
- * @copyright   Copyright (c) 2006-2020 Magento, Inc. (https://magento.com)
- * @copyright   Copyright (c) 2022 The OpenMage Contributors (https://openmage.org)
- * @license     https://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
- */
-