Scott Disick and Kourtney Kardashian Scott Disick and Kourtney Kardashian

A paternity test has proven that Scott Disick is, in fact, the father of Kourtney Kardashian's son Mason, E! Online reports.

After a male model claimed he was the father of Kardashian's 3-year-old son, the Keeping Up with the Kardashians star is set to prove him wrong.

Kourtney Kardashian hit with paternity suit

"After three-and-a-half years of rumors and lies being spread by an individual I met briefly at a photo shoot, I am setting the record straight that Scott is Mason's father," Kardashian told the site. "While it saddens me to have to address these ridiculous lies — especially when the truth was never in doubt — this story must be put to rest."

Michael Girgenti claims he had a three-month texting relationship with Kardashian, which eventually lead to them having sex. When Kardashian gave birth to Mason nine months later, Girgenti said he noticed a resemblance and reached out to Kardashian, who ignored him. Girgenti filed suit earlier this month requesting joint custody of Mason.