"Kim made me come to her house and like, help her pick a name," Kendall, 23, explained to Jimmy, 44, on Thursday, September 5. "And it was this whole thing."
"She would not let me leave the house until we figured out a name," she continued. "And then ended up going with a name that I didn’t even — like, that I didn’t care for as much."
"I think they were all really beautiful, but I was kind of rooting for another name," the Keeping Up with the Kardashians star revealed before explaining they spent "hours" deciding on a name.
Regardless, Kendall did not hold back while gushing about her newest nephew! "He’s awesome. He’s so adorable," she said.
The KKW Beauty Founder and the "Famous" rapper also share North, 6, Saint, 3, and Chicago, 19 months.
Watch Kendall's interview on The Tonight Show Starring Jimmy Fallon here!
What do you think of Kendall not liking Psalm's name? Let us know in the comments below.