Kylie Jenner and Tyga are reportedly only waiting until she turns 18 before they can proceed with their plans to marry. But there's a hitch as the pair is reportedly fighting over the prenup.

The issue? She wants it. He doesn't.

According to Hollywood Life, Kylie Jenner has proven to have a sharp business acumen as she managed to increase her assets from her salary with "KUWTK" to diversifying her investments and endorsements.

"Kylie Jenner may only be 17, but she's one smart business woman. Kylie, who has learned how to control her finances from the best mentor ever, momager Kris Jenner, has made her decision as to whether she'd accept 25-year-old Tyga's wedding proposal without a prenup discussion," the report added.

The source alleged that Kylie Jenner might love Tyga and is willing to marry him, but the "KUWTK" star is "not stupid."

The article continued, "If and when they do get married, Kylie will have a prenup in place and it will be air tight like a coffin. She's promised her mother, her father and her sisters that she will protect her money and the empire the family has created if she were to get married."

Previously, it was reported that Tyga is only using Kylie Jenner to support his expensive lifestyle as his tracks were not doing too well on the charts.

Celebrity Dirty Laundry reported that Kylie Jenner might be blinded by her love for Tyga.

"Kylie Jenner is young, clueless, and hopelessly in love with Tyga," it said. "Tyga on the other hand is hopelessly broke, and in love with Kylie's bottomless bank account."

"Tyga was just in court earlier this month because he owes a video vixen $20,000 in an unpaid lawsuit after she claims she was sexually abused on the set of one of his music videos. Tyga was back in court for another lawsuit - apparently he owes his former landlord $124,000 in back rent!"