United Kingdom, May 26 -- Ludacris insists his kids listen to "clean versions" of his hit songs.

The chart-topping rap star - who has Karma, 25, with Christine White, and Cai, 12, with Tamika Fuller, as well as Cadence, ten, and Chance, five, with his wife Eudoxie Bridges - has revealed that his children are allowed to listen to his records on one strict condition.

Ludacris, 48, told Us Weekly: "There's all types of parental advisory. You gotta listen to the clean versions of even my songs, clean versions."

Despite this, Ludacris doesn't have any objection to the idea of his daughters following in his footsteps in the music business.

He said: "I want them to pursue whatever dreams that they have. They love, matter of fact, one of them...