I think my husband has gained a lot more gray hair...

I had a scan on Friday at 17 weeks. We were both expecting a boy, well we found out we are having another little girl! We already have a 5 year old daughter. My husband is happy baby is healthy and I know he will love her just as much. He really really wanted a boy. I wish I could make him more excited but he rolls his eyes every time I mention it. Any suggestions?