Rootkit alert

Avast keeps flagging up that a rootkit may be installed on my computer and to do a boot scan but despite this the message keeps appearing, details as follows,

windows32\drivers\aswFsBlk.sys
aswMonFlt.sys
asw.rdr.sys
aswSnx.sys
asw.sp.sys
aswTdi.sys

Can someone please advise of the next course of action to take ?

Well these are all avast’s own drivers so I would say do nothing just ignore, I will be sending an email about this and hopefully it will be rectified soon.