If you have reported it as a false positive using the option in virus chest, you now wait
Tomorrow you right click the file in chest and rescan it, if not detected you may restore it

Avast Antivirus: Using the Virus Chest >> https://www.avast.com/faq.php?article=AVKB21#artTitle

Video: Using the Avast Virus Chest >> https://www.avast.com/faq.php?article=AVKB149#artTitle

I would let it stay in chest a couple of week before i delete :wink: