Can't set case creation rule to set the owner as a team

I've got a case creation rule that I'm wanting to change the case owner from a user to an owner team. I have set up the owner team, but in the case creation rule when I try to change the owner from the user to the owner team, I can only select other users; I can't select a team.  What am I doing wrong?!

Essentially what I'm wanting is when a case is created from an email sent in, is that case is assigned to a support team, rather than an individual user.