diff --git a/xCAT-server/sbin/xcatconfig b/xCAT-server/sbin/xcatconfig
index ed4d16b3d..659abf002 100755
--- a/xCAT-server/sbin/xcatconfig
+++ b/xCAT-server/sbin/xcatconfig
@@ -42,7 +42,7 @@ $::INSTALLDIR = "/install";
 
 # Default TFTP dir location
 $::TFTPDIR = "/tftpboot";
-if (!(xCAT::Utils->isMN())) {    # if not on Management Node
+if ((xCAT::Utils->isServiceNode())) {    # if not on Management Node
   xCAT::MsgUtils->message(
             'E',
             "xcatconfig should only be run on the Management Node."