[clamav-users] PUA detected. False Positive?

[joe a]

Clamav is finding this:

"X-Virus-Status: Infected (PUA.Win.Trojan.Xored-1)" in emails from a 
source I trust (well, it is a professional organization anyway).

Is there any way to tell clamav not to run the check for this particular 
client and this particular "trojan"? Just not check for it at all?

Or should I submit it as a "False positive" and hope it goes away?