diff --git a/install-dev/sql/db.sql b/install-dev/sql/db.sql
index e26fb12ed..1c4dfaa36 100644
--- a/install-dev/sql/db.sql
+++ b/install-dev/sql/db.sql
@@ -896,7 +896,7 @@ CREATE TABLE `PREFIX_order_detail` (
   `product_attribute_id` int(10) unsigned default NULL,
   `product_name` varchar(255) NOT NULL,
   `product_quantity` int(10) unsigned NOT NULL default '0',
-  `product_quantity_in_stock` int(10) unsigned NOT NULL default 0,
+  `product_quantity_in_stock` int(10) NOT NULL default 0,
   `product_quantity_refunded` int(10) unsigned NOT NULL default '0',
   `product_quantity_return` int(10) unsigned NOT NULL default '0',
   `product_quantity_reinjected` int(10) unsigned NOT NULL default 0,
diff --git a/install-dev/sql/upgrade/1.4.1.0.sql b/install-dev/sql/upgrade/1.4.1.0.sql
index fb31d2862..25f06680d 100755
--- a/install-dev/sql/upgrade/1.4.1.0.sql
+++ b/install-dev/sql/upgrade/1.4.1.0.sql
@@ -23,5 +23,7 @@ ALTER TABLE `PREFIX_connections` CHANGE `ip_address` `ip_address` BIGINT NULL DE
 UPDATE `PREFIX_meta_lang`
 SET `title` = 'Angebote', `keywords` = 'besonders, Angebote', `url_rewrite` = 'angebote' WHERE url_rewrite = 'preise-fallen';
 
+ALTER TABLE `PREFIX_order_detail` 
+CHANGE `product_quantity_in_stock` `product_quantity_in_stock` INT(10) NOT NULL DEFAULT '0';
 
 /* PHP:alter_cms_block(); */;