diff --git a/xCAT-server/lib/xcat/plugins/nodestat.pm b/xCAT-server/lib/xcat/plugins/nodestat.pm
index 94c2969f2..7493a4852 100644
--- a/xCAT-server/lib/xcat/plugins/nodestat.pm
+++ b/xCAT-server/lib/xcat/plugins/nodestat.pm
@@ -1214,7 +1214,7 @@ 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;