don't agree on names

Laura
My husband and I don't agree much on names. He chose our daughters name and insists that if it's a boy he has his middle name (all first born sons have the same middle name). Well I've always liked the name Avery and he flat refuses to let me use the name. So this time around I told him I'd concede to Avery being a middle name (since his cousin actually named her daughter Avery...they are weird about duplicating names) and he's still fighting me on it. Is it worth the fight or should I just drop it?