diff --git a/xCAT-server/lib/xcat/plugins/nodestat.pm b/xCAT-server/lib/xcat/plugins/nodestat.pm
index 5a4f9aa45..b2d674b96 100644
--- a/xCAT-server/lib/xcat/plugins/nodestat.pm
+++ b/xCAT-server/lib/xcat/plugins/nodestat.pm
@@ -1225,7 +1225,7 @@ sub usage
     my $retcode=shift;
     my $rsp = {};
     $rsp->{data}->[0] = "Usage:";
-    $rsp->{data}->[1] = "  nodestat [noderange] [-m|--usemon] [-p|powerstat] [-u|--updatedb]";
+    $rsp->{data}->[1] = "  nodestat [noderange] [-m|--usemon] [-p|powerstat] [-u|--updatedb] [-f|--usefping]";
     $rsp->{data}->[2] = "  nodestat [-h|--help|-v|--version]";
     if($retcode){
        $rsp->{errorcode}->[0]=$retcode;