diff --git a/install-dev/upgrade/php/p1540_add_missing_columns.php b/install-dev/upgrade/php/p1540_add_missing_columns.php
new file mode 100644
index 000000000..e08e85c49
--- /dev/null
+++ b/install-dev/upgrade/php/p1540_add_missing_columns.php
@@ -0,0 +1,43 @@
+<?php
+/*
+* 2007-2013 PrestaShop
+*
+* NOTICE OF LICENSE
+*
+* This source file is subject to the Open Software License (OSL 3.0)
+* that is bundled with this package in the file LICENSE.txt.
+* It is also available through the world-wide-web at this URL:
+* http://opensource.org/licenses/osl-3.0.php
+* If you did not receive a copy of the license and are unable to
+* obtain it through the world-wide-web, please send an email
+* to license@prestashop.com so we can send you a copy immediately.
+*
+* DISCLAIMER
+*
+* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+* versions in the future. If you wish to customize PrestaShop for your
+* needs please refer to http://www.prestashop.com for more information.
+*
+*  @author PrestaShop SA <contact@prestashop.com>
+*  @copyright  2007-2013 PrestaShop SA
+*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+*  International Registered Trademark & Property of PrestaShop SA
+*/
+
+function p1540_add_missing_columns()
+{
+	$errors = array();
+	$id_module = Db::getInstance()->getValue('SELECT id_module FROM `'._DB_PREFIX_.'module` WHERE name="loyalty"');
+	if ($id_module)
+	{
+		$list_fields = Db::getInstance()->executeS('SHOW FIELDS FROM `'._DB_PREFIX_.'loyalty`');
+		foreach ($list_fields as $k => $field)
+			$list_fields[$k] = $field['Field'];
+
+		if (in_array('id_discount', $list_fields))
+			if (!Db::getInstance()->execute('ALTER TABLE `'._DB_PREFIX_.'loyalty` CHANGE `id_discount` `id_cart_rule` INT( 10 ) UNSIGNED NULL DEFAULT NULL '))
+				$errors[] = Db::getInstance()->getMsgError();;				
+	}
+	if (count($errors))
+		return array('error' => 1, 'msg' => implode(',', $errors)) ;	
+}
\ No newline at end of file
diff --git a/install-dev/upgrade/sql/1.5.4.0.sql b/install-dev/upgrade/sql/1.5.4.0.sql
index bdf8d433c..4e6e1cee2 100644
--- a/install-dev/upgrade/sql/1.5.4.0.sql
+++ b/install-dev/upgrade/sql/1.5.4.0.sql
@@ -51,4 +51,6 @@ UPDATE `PREFIX_customer` SET `id_gender` = 1 WHERE `email` LIKE 'pub@prestashop.
 
 UPDATE `PREFIX_cart_rule_carrier` crc INNER JOIN `PREFIX_carrier` c ON crc.`id_carrier` = c.`id_carrier` SET crc.`id_carrier` = c.`id_reference`;
 
-UPDATE `PREFIX_order_payment` SET `order_reference` = LPAD(order_reference, 9 , '0');
\ No newline at end of file
+UPDATE `PREFIX_order_payment` SET `order_reference` = LPAD(order_reference, 9 , '0');
+
+/* PHP:p1540_add_missing_columns(); */;
\ No newline at end of file