Boxing champion Muhammad Ali has filed a lawsuit against the eReader and digital bookselling company, Kobo.

Bloomberg reports that Ali’s complaint alleges that Kobo used his famous slogan, “float like a butterfly, sting like a bee,” without consent. The slogan and Ali’s name both appeared in a Kobo advertisement featured in The New York Times.

Here’s more from the article: “Ali, 69, seeks a court order blocking Kobo’s use of the slogan and unspecified damages. The advertisement ‘made commercial use of the Muhammad Ali slogan and Muhammad Ali’s name without permission from or compensation to Muhammad Ali Enterprises,’ according to the complaint.” (via Publishers Lunch)