How long do you wait for someone to cash a check before issuing a stop payment?

I wrote a check to a reverend to perform my wedding ceremony at the end of January... it is now September (8 months later) and he still has not cashed the check. Would you issue a stop payment, remind him to cash the check or send him a new one? I would just like to balance my checkbook and move on.|||CALL HIM UP AND REMIND HIM SO YOU CAN DO YOUR CHECKBOOK