diff --git a/xCAT/postscripts/setupntp b/xCAT/postscripts/setupntp
index 9d6a502d2..4c1e3cf71 100755
--- a/xCAT/postscripts/setupntp
+++ b/xCAT/postscripts/setupntp
@@ -47,8 +47,7 @@ mkdir -p /var/lib/ntp
 chown ntp /var/lib/ntp
 
 echo "driftfile /var/lib/ntp/drift
-restrict 127.0.0.1
-authenticate no"  >>$conf_file
+restrict 127.0.0.1" >>$conf_file
 
 #service ntpd restart 
 service ntpd stop