diff --git a/app/code/Magento/Catalog/etc/adminhtml/system.xml b/app/code/Magento/Catalog/etc/adminhtml/system.xml
index 7a05601fcd666..1d563244f1432 100644
--- a/app/code/Magento/Catalog/etc/adminhtml/system.xml
+++ b/app/code/Magento/Catalog/etc/adminhtml/system.xml
@@ -59,7 +59,7 @@
                 <field id="grid_per_page_values" translate="label comment" type="text" sortOrder="2" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Products per Page on Grid Allowed Values</label>
                     <comment>Comma-separated.</comment>
-                    <validate>validate-per-page-value-list</validate>
+                    <validate>validate-per-page-value-list required-entry</validate>
                 </field>
                 <field id="grid_per_page" translate="label comment" type="text" sortOrder="3" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Products per Page on Grid Default Value</label>
@@ -69,7 +69,7 @@
                 <field id="list_per_page_values" translate="label comment" type="text" sortOrder="4" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Products per Page on List Allowed Values</label>
                     <comment>Comma-separated.</comment>
-                    <validate>validate-per-page-value-list</validate>
+                    <validate>validate-per-page-value-list required-entry</validate>
                 </field>
                 <field id="list_per_page" translate="label comment" type="text" sortOrder="5" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Products per Page on List Default Value</label>