NTP daemon slewing option check failed on some nodes

When I run the runcluvfy.sh got the below error. To fix the issue followed the below steps.

Checking NTP daemon command line for slewing option "-x"
Check: NTP daemon command line
  Node Name                             Slewing Option Set?
  ------------------------------------  ------------------------
  oel5-11g-rac2                         no
  oel5-11g-rac1                         no
Result:
NTP daemon slewing option check failed on some nodes
PRVF-5436 : The NTP daemon running on one or more nodes lacks the slewing option "-x"
Result: Clock synchronization check using Network Time Protocol(NTP) failed.

To perform the below steps need root access. Stop ntpd process

[root@oel5-11g-rac1 ~]# service ntpd stop
Shutting down ntpd:                                        [  OK  ]
[root@oel5-11g-rac1 ~]#

Edit the file /etc/sysconfig/ntpd the line OPTIONS="-u ntp:ntp -p /var/run/ntpd.pid" Add -x before -u in the above line.

[root@oel5-11g-rac1 ~]# cat /etc/sysconfig/ntpd
# Drop root to id 'ntp:ntp' by default.
OPTIONS="-u ntp:ntp -p /var/run/ntpd.pid"

# Set to 'yes' to sync hw clock after successful ntpdate
SYNC_HWCLOCK=no

# Additional options for ntpdate
NTPDATE_OPTIONS=""


[root@oel5-11g-rac1 ~]# cat /etc/sysconfig/ntpd
# Drop root to id 'ntp:ntp' by default.
OPTIONS="-x -u ntp:ntp -p /var/run/ntpd.pid"

# Set to 'yes' to sync hw clock after successful ntpdate
SYNC_HWCLOCK=no

# Additional options for ntpdate
NTPDATE_OPTIONS=""
[root@oel5-11g-rac1 ~]#

Start the ntpd service

[root@oel5-11g-rac1 ~]#  service ntpd start
ntpd: Synchronizing with time server:                      [  OK  ]
Starting ntpd:                                             [  OK  ]
[root@oel5-11g-rac1 ~]#

Now run the runcluvfy.sh to check the re-test the issue.
Result: Clock synchronization check using Network Time Protocol(NTP) passed