Last week, President-elect Donald Trump unveiled his latest business venture: signed “Make America Great Again” guitars selling for as much as $11,500. They may not be available much longer, since Gibson has accused the guitar’s maker of ripping off their own design.

First reported by Guitar World the cease and desist letter reportedly alleges the design of the Trump guitars “infringes upon Gibson’s exclusive trademarks, particularly the iconic Les Paul body shape.” Gibson didn’t immediately respond to a request for comment Monday.