Matthew McConaughey could have starred as Jack Dawson in "Titanic," but a new excerpt from a late producer's memoir claims he refused to drop his accent during his audition.

Six words reportedly cost Matthew McConaughey the lead role in Titanic: “No. That was pretty good. Thanks.” Producer Jon Landau, who has worked on the majority of director James Cameron 's feature films,

Regardless of the Titanic story, McConaughey has built a highly successful career, including winning an Oscar for his performance in Dallas Buyers Club in 2014. Though his Southern accent is a well-known trademark, the actor has been able to tone it down for several roles, such as the Buster Moon character in the Universal Pictures movie Sing.