diff --git a/install-dev/php/migrate_orders.php b/install-dev/php/migrate_orders.php
index 641b4678e..74e5de562 100644
--- a/install-dev/php/migrate_orders.php
+++ b/install-dev/php/migrate_orders.php
@@ -47,7 +47,7 @@ function migrate_orders()
 	// create temporary tables
 	mo_duplicateTables();
 
-	$order_res = Db::getInstance()->execute(
+	$order_res = Db::getInstance()->query(
 			'SELECT *
 			FROM `'._DB_PREFIX_.'orders`');
 
diff --git a/install-dev/sql/upgrade/1.5.0.2.sql b/install-dev/sql/upgrade/1.5.0.2.sql
index 954ee8a92..0b442960b 100644
--- a/install-dev/sql/upgrade/1.5.0.2.sql
+++ b/install-dev/sql/upgrade/1.5.0.2.sql
@@ -341,6 +341,8 @@ CREATE TABLE `PREFIX_category_shop` (
 INSERT INTO `PREFIX_category_shop` (`id_category`, `id_shop`) VALUES
 (1, 1);
 
+ALTER TABLE `PREFIX_order_detail` ADD `tax_computation_method` tinyint(1) unsigned NOT NULL default '0' AFTER `product_weight`;
+
 /* PHP:migrate_orders(); */;
 
 CREATE TABLE IF NOT EXISTS `PREFIX_linksmenutop` (
@@ -427,8 +429,6 @@ WHERE `class_name` = 'AdminAccounting';
 ALTER TABLE `PREFIX_order_slip_detail` CHANGE `amount` `amount_tax_excl` DECIMAL( 10, 2 ) default NULL;
 ALTER TABLE `PREFIX_order_slip_detail` ADD COLUMN `amount_tax_incl` DECIMAL(10,2) default NULL AFTER `amount_tax_excl`;
 
-ALTER TABLE `PREFIX_order_detail` ADD `tax_computation_method` tinyint(1) unsigned NOT NULL default '0' AFTER `product_weight`;
-
 CREATE TABLE `PREFIX_webservice_account_shop` (
 `id_webservice_account` INT( 11 ) UNSIGNED NOT NULL,
 `id_shop` INT( 11 ) UNSIGNED NOT NULL,