diff --git a/install-dev/upgrade/sql/1.5.0.18.sql b/install-dev/upgrade/sql/1.5.0.18.sql
index b009ab435..283ad5827 100644
--- a/install-dev/upgrade/sql/1.5.0.18.sql
+++ b/install-dev/upgrade/sql/1.5.0.18.sql
@@ -2,4 +2,5 @@ SET NAMES 'utf8';
 
 ALTER TABLE `PREFIX_image_shop` ADD `cover` TINYINT(1) UNSIGNED NOT NULL AFTER `id_shop`;
 ALTER TABLE `PREFIX_image_shop` DROP PRIMARY KEY;
-ALTER TABLE `PREFIX_image_shop` ADD  ADD INDEX (`id_image`, `id_shop`, `cover`);
+ALTER TABLE `PREFIX_image_shop` ADD INDEX (`id_image`, `id_shop`, `cover`);
+UPDATE `PREFIX_image_shop` image_shop SET image_shop.`cover`=1 WHERE `id_image` IN (SELECT `id_image` FROM `PREFIX_image` i WHERE i.`cover`=1);