Pretty irritated at hubby

So our son will be here in 3 weeks or less and husband and I had already agreed on his first and middle name, we both came up with the first name and he came up with the middle name. I was never completely happy with the middle name but I settled, all this time we were set on the name. Basically as soon as we found out we were having a boy we searched and searched and agreed. A few weeks ago I found a middle name I really liked and showed it to him, he really liked it to and loved the meaning so we both decided to change our sons middle name to the new name we found. We haven’t told our families what the middle name will be because we don’t want them trying to change our minds or voicing their opinions. Anyway today hubby comes up to me and tells me he wants our sons middle name to be his name, like he want our son named after him. I love my husband with all my heart, but I do not like his name. It is very common Hispanic name and we’ve always agreed to steer clear of Jr. so I don’t get it if he’s doing this to annoy me because he laughs every time or if he is serious. I’m so irritated at the fact that we put so much effort into thinking of names and just out of the blue wants to use his name as our sons middle name. I don’t know how else to feel, never felt like the kinda parent to name my child my name.