diff --git a/classes/CustomerMessage.php b/classes/CustomerMessage.php
index ae8709d5b..18291b3ac 100644
--- a/classes/CustomerMessage.php
+++ b/classes/CustomerMessage.php
@@ -46,7 +46,7 @@ class CustomerMessageCore extends ObjectModel
 		'fields' => array(
 			'id_employee' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
 			'id_customer_thread' => array('type' => self::TYPE_INT),
-			'ip_address' => 		array('type' => self::TYPE_INT, 'validate' => 'isIp2Long'),
+			'ip_address' => 		array('type' => self::TYPE_STRING, 'validate' => 'isIp2Long', 'size' => 15),
 			'message' => 			array('type' => self::TYPE_STRING, 'validate' => 'isCleanHtml', 'required' => true, 'size' => 65000),
 			'file_name' => 			array('type' => self::TYPE_STRING),
 			'user_agent' => 		array('type' => self::TYPE_STRING),
diff --git a/install-dev/upgrade/sql/1.5.6.1.sql b/install-dev/upgrade/sql/1.5.6.1.sql
new file mode 100644
index 000000000..435bb1009
--- /dev/null
+++ b/install-dev/upgrade/sql/1.5.6.1.sql
@@ -0,0 +1 @@
+ALTER TABLE `PREFIX_customer_message` CHANGE `ip_address` `ip_address` VARCHAR( 15 ) NULL DEFAULT NULL;
\ No newline at end of file