diff --git a/install/sql/ispconfig3.sql b/install/sql/ispconfig3.sql
index c236f7c6277c091b191683f73c12f57e7c1414ee..de421b7408b0925a13232c34cd7e170c30bbe820 100644
--- a/install/sql/ispconfig3.sql
+++ b/install/sql/ispconfig3.sql
@@ -609,6 +609,7 @@ CREATE TABLE `server` (
   `vserver_server` tinyint(1) NOT NULL default '0',
   `config` text NOT NULL,
   `updated` bigint(20) unsigned NOT NULL default '0',
+  `mirror_server_id` int(11) unsigned NOT NULL default '0',
   `active` tinyint(1) NOT NULL default '1',
   PRIMARY KEY  (`server_id`)
 ) ENGINE=MyISAM AUTO_INCREMENT=1;