The reality show matriarch is supporting daughter Kourtney through her tough split

By Aili Nahas
Updated July 15, 2015 12:00 PM
Credit: Michael Tran/Filmmagic

A word to the wise: Don’t mess with the Kardashians!

The famously close-knit family is rallying around Kourtney Kardashian in the wake of her recent split from Scott Disick, and matriarch Kris Jenner is none too happy with her former (almost) son-in-law.

“Kris is furious at Scott,” says a friend of Disick. “He’s just not seeing things clearly.”

It’s no secret that Jenner, 59, and Disick, 32, have had a bumpy relationship since he began dating Kardashian, 36. (Even in the 2007 premiere episode of Keeping Up with the Kardashians, Jenner was visibly displeased with Disick as a match for her eldest daughter.)

Jenner stood by as Disick struggled with alcohol abuse, rehab stays and several hospitalizations, but it appears this time, she’s had enough.

“First and foremost, Kris just wants to protect her family,” says an insider. “Seeing her kids happy is the most important thing.”

RELATED VIDEO: Kris Jenner Is Furious with Scott Disick

For more inside scoop on Scott and Kourtney’s life apart, pick up this week’s issue of PEOPLE, on newsstands Friday