Lil Wayne is being sued by another MC who insists he's the rightful owner of the beat behind 'How To Love'.

Rapper Rich Rick filed the lawsuit earlier this week in L.A. County Superior Court, claiming he purchased several master recordings between 2006 and 2009, including the beat that now appears on 'How to Love', from a group of rap producers called Drummer Boyz.

Rick claims the Drummer Boyz pitched the same beat to Lil Wayne in November 2010 and that Weezy acquired it in exchange for a 35 per cent royalty agreement, eventually using the beat on 'How to Love."

Rick is suing Weezy, the Drummer Boyz, and other parties for everything from breach of contract to fraud, demanding everything DB are entitled to under their agreement with Wayne and 10 per cent interest.

Neither the Drummer Boyz or Lil Wayne have commented on the suit.

Listen to 'How To Love' here: