Index: /mods/wpsg_mod_stock.class.php
===================================================================
--- /mods/wpsg_mod_stock.class.php	(revision 7640)
+++ /mods/wpsg_mod_stock.class.php	(revision 7641)
@@ -138,6 +138,6 @@
 			wpsg_checkRequest('stock', [WPSG_SANITIZE_INT, ['allowEmpty' => true]], __('Lagerbestand'),$product_data, $_REQUEST['wpsg_mod_stock_stock']);
 			wpsg_checkRequest('stock_count', [WPSG_SANITIZE_CHECKBOX], __('Lagerbestand zÀhlen'), $product_data, $_REQUEST['wpsg_mod_stock_stock_count']);
-			wpsg_checkRequest('minstockproduct_count', [WPSG_SANITIZE_INT], __('Mindestlagerbestand zÀhlen'), $product_data, $_REQUEST['wpsg_mod_minstockproduct']);
-			wpsg_checkRequest('minstockproduct_mail', [WPSG_SANITIZE_EMAIL], __('Lagerbestand / Benachrichtigung an'), $product_data, $_REQUEST['wpsg_mod_stock_minstockproduct_mail']);
+			wpsg_checkRequest('minstockproduct_count', [WPSG_SANITIZE_INT, ['allowEmpty' => true]], __('Mindestlagerbestand zÀhlen'), $product_data, $_REQUEST['wpsg_mod_minstockproduct']);
+			wpsg_checkRequest('minstockproduct_mail', [WPSG_SANITIZE_EMAIL, ['allowEmpty' => true]], __('Lagerbestand / Benachrichtigung an'), $product_data, $_REQUEST['wpsg_mod_stock_minstockproduct_mail']);
 			 
 		}