Constructor.DOS.BVCK.09

i have a virusfile that Avast can detect but Kaspersky online scanner well.

the archived file have the name:bvck09.zip and by kaspersky online scanner is that a virus named:Constructor.DOS.BVCK.09 but avast detect nothing in that file.He says that its clean
What must i believe?Avast of Kaspersky

I think KAV is right in this case, but i think it is not really necessary to find such constructor-kits. Just delete the whole archive. It is not a Virus, it is a tool to generate (batch)viruses.

Thank you.I have deleted the archive.Avast is great and much better then any other AV