diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index f90be4a08..6741f40fb 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -535,7 +535,7 @@ noderes => {
   node => 'The node name or group name.',
   servicenode => 'A comma separated list of node names (as known by the management node) that provides most services for this node. The first service node on the list that is accessible will be used.  The 2nd node on the list is generally considered to be the backup service node for this node when running commands like snmove.',
   netboot => 'The type of network booting to use for this node.  Valid values:  pxe or xnba for x86* architecture, yaboot for POWER architecture.',
-  tftpserver => 'The TFTP server for this node (as known by this node).',
+  tftpserver => 'The TFTP server for this node (as known by this node). If not set, it defaults to networks.tftpserver.',
   tftpdir => 'The directory that roots this nodes contents from a tftp and related perspective.  Used for NAS offload by using different mountpoints.',
   nfsserver => 'The NFS or HTTP server for this node (as known by this 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.',