small bug fix
small bug fix

Yandell-Lab/wham,jewmanchue/wham,zeeev/wham,zeeev/wham,Yandell-Lab/wham,Yandell-Lab/wham,jewmanchue/wham,chapmanb/wham,jewmanchue/wham,chapmanb/wham,jewmanchue/wham,zeeev/wham,chapmanb/wham,Yandell-Lab/wham,zeeev/wham,chapmanb/wham