The Kardashians have made quite a name for themselves, and they won’t let just anyone get a piece of it.

During a recent episode of “Keeping Up With the Kardashians,” the family discussed Rob Kardashian’s engagement to Blac Chyna during a trip to Vail, Colorado. As was reported by Entertainment Online, after learning that the youngest Kardashian sibling — and only male member of the family — had proposed to then-girlfriend Blac Chyna, Kim, Khloé and Kourtney Kardashian grew worried about the pair having children, with Kylie Jenner’s on-and-off boyfriend Tyga pointing out that if Rob, 29, and his fiancée had a son together, that child would “carry on the legacy.” Kourtney, 36, who was joined on the trip by ex-boyfriend Scott Disick, suggests a simple solution — changing her children’s last names from Disick to Kardashian. The idea is ruled out, however, once Scott chimes in.

“What the f---, I’m sitting right here, you sick f---!” Scott said. “What the f--- is wrong with you?”

The family was quiet about Rob’s engagement on social media, but made no secret about their feelings on the show. Previews for Sundays episode showed Khloé, who was once very close with Rob, suggesting that no one congratulate him on his engagement. Additionally, she said the family should not attend his wedding, whenever that may happen. As has been explained on the show, most of the family's resentment of Rob’s relationship stems not from whom he’s with, but rather the way he went about doing things with her. He is said to have brought her over to the house he and Khloé shared several times after being asked not to and did not tell anyone about their engagement.

Rob and Blac Chyna have not let the family's backlash on the popular E! series slow their momentum. The model opened up about her maternity style on June 22, during a Daily Mail yacht party in Cannes, France. During the event she said her pregnancy was going “really, really good,” but admitted that dressing was getting increasingly difficult. Blac Chyna did not have any specific inspiration for maternity looks, but said she did have one important requirement:

“I just want to keep my a—covered,” she revealed.

It remains unclear when Blac Chyna and Rob Kardashian’s first child together is due. The couple have been quiet about their impending bundle of joy and will likely remain that way through much of the pregnancy. On May 12 Rob told E! News he had no desire to thrust his unborn into the spotlight.

Kourtney Kardashian Kourtney Kardashian, photographed during the NBCUniversal Upfronts in New York City on May 16, 2016, briefly considered changing the last names of her children to protect the Kardashian name from Blac Chyna. Photo: Getty Images