diff --git a/etc/adminhtml/system.xml b/etc/adminhtml/system.xml
index 5ef1c9f..f52133e 100644
--- a/etc/adminhtml/system.xml
+++ b/etc/adminhtml/system.xml
@@ -23,6 +23,7 @@
Magento\Config\Model\Config\Backend\Serialized\ArraySerialized
web/url/custom_path_mapper
+ 1
custom