diff --git a/xCAT/postscripts/setupntp b/xCAT/postscripts/setupntp
index cfa1ddb0e..4f607fc64 100755
--- a/xCAT/postscripts/setupntp
+++ b/xCAT/postscripts/setupntp
@@ -23,3 +23,7 @@ chown ntp /etc/ntp
 echo "driftfile /var/lib/ntp/drift
 restrict 127.0.0.1
 authenticate no"  >>$conf_file
+
+service ntpd stop 
+ntpdate $master
+service ntpd start