Rapper Rick Ross is suing party rock duo LMFAO for copyright infringement.

Ross claims that the duo's 2010 single "Party Rock Anthem," which features the line, "Everyday I'm shufflin'" directly rips off his single "Hustlin,'" off his 2006 debut album "Port of Miami, which includes the line, "Everyday I'm hustlin'."

"The use of 'Hustlin' ' in 'Party Rock Anthem' is readily apparent, despite the slight change from 'Everyday I’m hustlin' …' to 'Everyday I'm shufflin' …' and constitutes, inter alia, the creation of an unauthorized derivative work," the lawsuit reads, according to The Hollywood Reporter.

Ross claims LMFAO's line is performed the same way his is, and it's "an obvious attempt to capitalize on the fame and success of Hustlin'."

"Party Rock Anthem" sold over 7.5 million copies and has been licensed for use in various multimedia outlets. The duo even started a fahion line based on the single.

Ross' lawyer says that the duo has ignored warnings of the alleged copyright infringement.

Last week Ross won a lawsuit brought against him by famed 80s drug dealer "Freeway" Ricky Ross over his name.