Washington DC, Aug. 6 -- Actor Matthew McConaughey allegedly lost out on the role of Jack Dawson in 'Titanic' because he wouldn't let go of his Southern accent, according to a memoir written by the film's producer, Jon Landau, reported People.

McConaughey's accent did not resonate with the film's director, James Cameron, who told the actor, "That's great, now let's try it a different way," according to Landau's book.

But McConaughey felt otherwise, telling Cameron, "No. That was pretty good. Thanks," writes the producer.

"Let's just say, that was it for McConaughey," Landau wrote.

Finally, Jack was played by Leonardo DiCaprio, and it turned out to be an iconic role; however, McConaughey's career was not affected.

'Titanic' is a 1997 ...