Double licence win/linux

I have a licence for avast 4.8 home free with XP.
Now I have also installed on the same PC a new O.S. (Ubuntu) and I want donwload Avast for Linux home free.
It’s is possible? (only because I already have one licence)
Can I use the same registration key, or I need a new one?
If yes, do they exipre at the same data?
Thanks for your reply
A.

Hi,

I added Ubuntu to W98SE and was advised to use the same licence code. It worked.

I assume they will both come up for renewal on the same date. I’ll just wait and see.

My regards