Jay Leno gets an assist for naming Kim Kardashian and Kanye West’s daughter, North West.

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Kardashian teamed up with Kylie Jenner for the latter’s “Get Ready with Us” video series. During the make-up session, Kardashian revealed the origins of her eldest daughter’s name.

“I actually got it from Jay Leno, who made that as a joke,” Kardashian revealed. It was not an impulsive decision, however, as Kardashian took “four or five days” to commit to the name.

“Everyone was coming up to me like, ‘It’s such a cool name. You should really think about it,'” Kardashian shared. It was ultimately Pharrell William who convinced her to go with it. “They really become the name you name them,” she added of North.

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Kardashian initially shut down the idea when Leno teased it during a 2013 appearance on “The Tonight Show with Jay Leno”.