AVERAGEIF without counting zero's

I'm trying to average a value in b2 plus a different sheet (bills) c2:ab2 and not average in cells that contain a zero. Here is how I have the formula:
=averageif(b2,bills!c2:ab2,"<>0") what I get is a dialog box saying error in formula and it highlights b2 in the formula. If I remove b2 from the formula it works.
=averageif(bills!c2:ab2,"<>0") . Any idea on whats going on?

jim