diff --git a/xCAT-server-2.0/share/xcat/netboot/add-on/stateless/stateless b/xCAT-server-2.0/share/xcat/netboot/add-on/stateless/stateless
index 5376bd3f9..1c7fd6646 100755
--- a/xCAT-server-2.0/share/xcat/netboot/add-on/stateless/stateless
+++ b/xCAT-server-2.0/share/xcat/netboot/add-on/stateless/stateless
@@ -75,7 +75,7 @@ ARC=false" >/etc/sysconfig/clock
 driftfile /etc/ntp/drift
 multicastclient
 broadcastdelay 0.008
-authenticate no
+disable auth
 keys /etc/ntp/keys
 trustedkey 65535
 requestkey 65535