The Kardashian sisters have one big reason to be happy that Rob and Blac Chyna broke up

LOS ANGELES, CA - MARCH 02: TV personalities Khloe Kardashian, Kourtney Kardashian and Kim Kardashian attend the 22nd Annual Elton John AIDS Foundation's Oscar Viewing Party on March 2, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

The Kardashian sisters probably let out a sigh of relief when Rob and Chyna ended things.

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According to TMZ, since the former couple has decided not to get married, Chyna will not be able to profit off of the famous Kardashian last name.

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The tabloid reports that the sisters filed legal documents to try to block Chyna from using their name if she did marry Rob. They reportedly claimed Chyna trademarking the name “Angela Kardashian” for promotional purposes would cause confusion.

Chyna’s request to use the name has officially been blocked.

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