Mark Wahlberg and longtime love Rhea Durham are thrilled they’re expecting a boy.

Their 4-year-old daughter Ella?

Not so much.

“My daughter was extremely disappointed when she found out that we were having a boy — she wanted a little sister,” he told Usmagazine.com at the NYC opening of The Happening Tuesday.

“She already had all these plans of dressing a little sister up in clothes,” he said. “But I told her, ‘Honey, that means you’ll be more spoiled than the boys.’ She goes, ‘Oh, daddy, I didn’t think of that!’”

He said he is even now prepping for the new one (they also have a son, Michael, 2).

“I’m moving the office out of the house to prepare his room,” Wahlberg told Us.

He added that he is now trying to do more family friendly films, including his latest, M. Night Shyamalan’s The Happening (out Friday).

“This is a movie that my nieces and nephews can watch,” he said. “I’ve done things that I’m not proud of, and that I’m going to have to explain,” he added.

Such as?

“Running around in my underwear,” he said.

Co-star Zooey Deschanel said Wahlberg will make a “great” father-of-three.

“He’s wonderful with children, and he loves his children so much,” she told Us. “He talks about them all the time.”