An extra who appeared in 1997 disaster drama Titanic is suing film studio 20th Century Fox over his pay.
The actor, Vi Jay, was cast as a non-speaking background extra helping the guests board the doomed ship at the start of the movie.
He claims director James Cameron subsequently gave him two lines of dialogue, but he was not paid for his speaking part.
In the lawsuit, Jay claims he was given $60 (£37.50) a day, which is in line with his role as an extra, but he now says having a speaking role entitled him to Screen Actors' Guild (Sag) benefits, including residual income from the film's profits.
Jay is now suing the studio for his residual share of the film's revenue, which exceeded $2 billion worldwide, according to Tmz.com.
Perry appeared on James Corden's 'The Late Late Show' on Monday and addressed her long-standing rivalry with Swift.