Kanye West and Kim Kardashian at 2014 LACMA Art + Film Gala Honoring Quentin Tarantino And Barbara Kruger at LACMA in Los Angeles

It sounds like Kim Kardashian and Kanye West were planning on a boy.

The A-listers – who recently announced they’re expecting a son this time around – underwent an IVF gender-selection process, Us reports.

“She only had boy embryos implanted,” says a source close to Kim.

During the procedure — which can start at roughly $17,000 — doctors isolate fertilized embryos of the preferred gender prior to transferring them into a uterus.

“Kanye and Kim are so excited to complete their family,” says another insider. “Kanye loves Nori more than anything, but to make his world complete, he wanted a little boy, an heir.”

Another pal adds: “Kim always wanted two kids. A girl and a boy.”

The Hollywood couple – who are already parents to 2-year-old daughter North – struggled with infertility and suffered previous failed IVF attempts.

“Kim would have happily taken a healthy baby, but being able to choose the sex is the cherry on top,” the source adds.