Mother in law in delivery room?

So my husband and I decided that it would just be us in the delivery room when I gave birth so that our mothers wouldn't fight over one being with us vs the other.. 
Well lately, I've been wanting to have my mother in the room with me just for support. My husband isn't too happy because he knows his mother will make a big deal of it and he doesn't want that stress on me and of course he doesn't want to be the bad guy (momma's boy). 
Am I wrong for wanting just my mom in there with me? We still have a ways to go but it's been on my mind.