diff --git a/perl-xCAT/xCAT/DSHCLI.pm b/perl-xCAT/xCAT/DSHCLI.pm
index 2ce81279f..ae250a582 100644
--- a/perl-xCAT/xCAT/DSHCLI.pm
+++ b/perl-xCAT/xCAT/DSHCLI.pm
@@ -3805,23 +3805,13 @@ sub parse_and_run_dsh
         # check if any node in the noderange is the Management Node and exit 
         # with error, if the Management Node is in the Database and in the
         # noderange
-        my $mname;
-        my $tab = xCAT::Table->new('nodetype');
-        my @nodelist2=$tab->getAllNodeAttribs(['node','nodetype']);
-        foreach my $n (@nodelist2) {
-           if ($n->{'nodetype'} eq "mn") {  # this is the MN
-              $mname=$n->{'node'};
-              last;
-           } 
-        }
-        if ($mname) {  # MN in the database
-         if (grep(/$mname/, @nodelist)) { # if MN in the noderange
+        my $mname = xCAT::Utils->noderangecontainsMn(@nodelist); 
+        if ($mname) {  # MN in the nodelist
             my $rsp = {};
             $rsp->{error}->[0] =
               "You must not run -K option against the Management Node:$mname.";
             xCAT::MsgUtils->message("E", $rsp, $::CALLBACK, 1);
             return;
-         } 
         } 
         # if devicetype=Mellanox,  xdsh does not setup ssh,  rspconfig does
         if ($switchtype =~ /Mellanox/i) {