Rapper 50 Cent is suing fast food chain, Taco Bell, for using his name without permission in a recent ad campaign.

According to MSN.com, 50, whose real name is Curtis Jackson, found out about the campaign after seeing it in a news report.

The ad is a part of Taco Bell’s “Why Pay More?” campaign, which promotes menu items for less than a dollar.

The print ad features the fast food chain asking 50 to change his name to 79 Cent, 89 Cent or 99 Cent.

A spokesperson for Taco Bell released a statement saying, “We made a good faith, charitable offer to 50 Cent to change his name to either 79, 89 or 99 Cent for one day by rapping his order at a Taco Bell, and we would have been very pleased to make the $10,000 donation to the charity of his choice.”

The rapper is seeking $4 million in damages.