diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index da2a86dd8..e584942cb 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -544,6 +544,7 @@ site => {
    "  useSSHonAIX:\t(yes/1 or no/0). If yes, ssh/scp will be setup and used. If no, rsh/rcp will be setup and used on AIX.\n\n".
    "  rsh:\tpath to remote shell command for xdsh.\n\n".
    "  rcp:\tpath to remote copy command for xdcp.\n\n".
+   "  snmpc:\tThe snmp community string that xcat should use when communicating with the switches.\n\n".
    "  svloglocal:\tsyslog on the service node does not get forwarded to the mgmt node - default is 0.\n\n".
    "  xcatconfdir:\t(default /etc/xcat)\n\n".
    "  xcatdport:\tThe port used by the xcatd daemon for client/server communication.\n\n".