Monit sending out pid changed mails when I have configured it not to

[Cherian Thomas]

Hi all,

I have configured monit not to send pid changed mails as shown below

  check process apache
    matching "httpd"
    alert address@hidden but not on { pid }
    group server

but, even then I get a pid changed mail every time apache restarts

PPID changed Service apache

       Date:        Sun, 25 Mar 2012 03:32:07
       Action:      alert
       Host:        site.com
       Description: process PPID changed from 18027 to 1

Your faithful employee,
Monit

How do I stop this from happening?
Thanks,
Cherian