Fahrenheit 451 author Ray Bradbury has said director Michael Moore did not ask to use his title for his documentary Fahrenheit 9/11.
Michael Moore's documentary film opens across the US next week
"That's not his novel, that's not his title," he said, adding that the film should now be renamed.
The 1953 novel, widely considered a masterpiece, depicts an ugly futuristic society in which firemen burn homes and libraries in order to destroy books.
The Palme d'Or-winning film will be shown around the US from 25 June.
Fahrenheit 451 takes its title from the temperature at which books burn. Moore has called Fahrenheit 9/11 the "temperature at which freedom burns."
Bradbury, who has not seen the movie, said he called Moore's company six months ago to protest and was promised that Moore would call back.
Moore only called last week, Bradbury said, adding that Moore told him he was "embarrassed".
"He suddenly realised he's let too much time go by," the author said.
Joanne Doroshow, a spokeswoman for Fahrenheit 9/11, said the film's makers had "the utmost respect for Ray Bradbury".
"Mr Bradbury's work has been an inspiration to all of us involved in this film, but when you watch this film you will see the fact that the title reflects the facts that the movie explores, the very real life events before, around and after 9/11," she said.
Bradbury said he would rather avoid litigation and is "hoping to settle this as two gentlemen, if he'll shake hands with me and give me back my book and title".
Fahrenheit 9/11 will be released in the UK on 9 July.