diff --git a/install-dev/upgrade/php/block_category_1521.php b/install-dev/upgrade/php/block_category_1521.php
new file mode 100644
index 000000000..7c508023e
--- /dev/null
+++ b/install-dev/upgrade/php/block_category_1521.php
@@ -0,0 +1,14 @@
+<?php 
+
+
+
+function block_category_1521()
+{
+	if (!Db::getInstance()->ExecuteS('SELECT `'._DB_PREFIX_.'configuration` WHERE `name`=\'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\', 2, NOW(), NOW())');
+	else if (Db::getInstance()->ExecuteS('SELECT `'._DB_PREFIX_.'configuration` WHERE and `value` IS NOT NULL AND `value` <> 0'))
+		Db::getInstance()->Execute('UPDATE  `'._DB_PREFIX_.'configuration` SET `value` = 2 WHERE `name`=\'BLOCK_CATEG_MAX_DEPTH\' ');
+
+}
\ No newline at end of file
diff --git a/install-dev/upgrade/sql/1.5.2.1.sql b/install-dev/upgrade/sql/1.5.2.1.sql
index d0abe21fa..74bcff51a 100644
--- a/install-dev/upgrade/sql/1.5.2.1.sql
+++ b/install-dev/upgrade/sql/1.5.2.1.sql
@@ -1,3 +1,4 @@
 SET NAMES 'utf8';
 
-/* PHP:blocknewsletter1530()(); */;
\ No newline at end of file
+/* PHP:blocknewsletter1530(); */;
+/* PHP:block_category_1521(); */;