diff --git a/xCAT/postscripts/setupntp b/xCAT/postscripts/setupntp
index 6d442cdcf..7748f2805 100755
--- a/xCAT/postscripts/setupntp
+++ b/xCAT/postscripts/setupntp
@@ -1,25 +1,21 @@
-#!/bin/ksh
+#!/bin/sh
 # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
-#egan@us.ibm.com
-#(C)IBM Corp
 #
-
-. $XCATROOT/lib/functions
-
-if TIMESERVERS=$(tabdb $SITETAB timeservers 1) 
-then
-	:
-else
-	echo "$0: timeservers not defined in $SITETAB" | logger -t xcat
-	exit
+#---------------------------------------------------------------------------
+# setup NTP configuration on the compute nodes
+#
+#---------------------------------------------------------------------------
+master=$MASTER
+conf_file="/etc/ntp.conf"
+conf_file_backup="/etc/ntp.conf.postbackup"
+# if backup does not exist, backup
+if [ !  -f $conf_file_backup ]; then
+   mv -f $conf_file $conf_file_backup
 fi
 
 logger -t xcat "Install: Setup NTP"
 
-for i in $(echo $TIMESERVERS | tr ',' ' ')
-do
-	echo "server $i.$DOMAIN"
-done >/etc/ntp.conf
+echo "server $master" >$conf_file
 
 mkdir -p /etc/ntp
 chown ntp /etc/ntp
@@ -31,10 +27,6 @@ authenticate no
 keys		/etc/ntp/keys
 trustedkey	65535
 requestkey	65535
-controlkey	65535" >>/etc/ntp.conf
+controlkey	65535" >>$conf_file
 
-for i in $(echo $TIMESERVERS | tr ',' ' ')
-do
-	echo "$i.$DOMAIN"
-done >/etc/ntp/step-tickers