diff --git a/install-dev/upgrade/php/block_category_1521.php b/install-dev/upgrade/php/block_category_1521.php
index a132475ed..4ff4d086b 100644
--- a/install-dev/upgrade/php/block_category_1521.php
+++ b/install-dev/upgrade/php/block_category_1521.php
@@ -26,11 +26,11 @@
 
 function block_category_1521()
 {
-	if (!Db::getInstance()->getValue('SELECT FROM `'._DB_PREFIX_.'configuration` WHERE `name` LIKE \'BLOCK_CATEG_MAX_DEPTH\' '))
+	if (!Db::getInstance()->getValue('SELECT value FROM `'._DB_PREFIX_.'configuration` WHERE `name` LIKE \'BLOCK_CATEG_MAX_DEPTH\' '))
 		Db::getInstance()->Execute('INSERT INTO `'._DB_PREFIX_.'configuration` 
 			(`id_configuration` ,`id_shop_group` ,`id_shop` ,`name` ,`value` ,`date_add` ,`date_upd`)
 			VALUES (NULL, NULL, NULL, \'BLOCK_CATEG_MAX_DEPTH\', 4, NOW(), NOW())');
-	else if ($maxdepth = (int)Db::getInstance()->getValue('SELECT FROM `'._DB_PREFIX_.'configuration` WHERE `value` IS NOT NULL AND `value` <> 0'))
+	else if ($maxdepth = (int)Db::getInstance()->getValue('SELECT value FROM `'._DB_PREFIX_.'configuration` WHERE `value` IS NOT NULL AND `value` <> 0 AND `name` LIKE \'BLOCK_CATEG_MAX_DEPTH\''))
 		Db::getInstance()->Execute('UPDATE `'._DB_PREFIX_.'configuration` SET `value` = '.($maxdepth + 1).' WHERE `name` LIKE \'BLOCK_CATEG_MAX_DEPTH\'');
 
 }
\ No newline at end of file