diff --git a/perl-xCAT/xCAT/PPCpower.pm b/perl-xCAT/xCAT/PPCpower.pm
index e9bde2ffd..201c6b132 100644
--- a/perl-xCAT/xCAT/PPCpower.pm
+++ b/perl-xCAT/xCAT/PPCpower.pm
@@ -16,7 +16,7 @@ sub parse_args {
     my $command = $request->{command};
     my $args    = $request->{arg};
     my %opt     = ();
-    my @rpower  = qw(on onstandby off softoff stat state reset boot of sms);
+    my @rpower  = qw(on onstandby off softoff stat state reset boot of sms rackstandby exit_rackstandby lowpower);
 
     #############################################
     # Responds with usage statement