diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index c8a2b121b..1ca0a2f84 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -357,7 +357,7 @@ noderes => {
   netboot => 'The type of network booting supported by this node.  Valid values:  pxe, yaboot.',
   tftpserver => 'The TFTP server for this node (as known by this node).',
   nfsserver => 'The NFS server for this node (as known by this node).',
-  monserver => 'The monitoring aggregation point for this node (as known by the management node).',
+  monserver => 'The monitoring aggregation point for this node. The format is "x,y" where x is the ip address as known by the management node and y is the ip address as known by the node.',
   nfsdir => 'Not used??  The path that should be mounted from the NFS server.',
   installnic => 'The network adapter on the node that will be used for OS deployment.  If not set, primarynic will be used.',
   primarynic => 'The network adapter on the node that will be used for xCAT management.  Default is eth0.',