EXCLUSIVE: Mark Wahlberg on Being Mistaken for Matt Damon: 'I Don't Try to Correct People'

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For most people, getting mistaken for Matt Damon would be flattering, but that's not necessarily true if you're Mark Wahlberg.

Wahlberg tells ET that after years of fans getting him mixed up with the Oscar winner, it's now become a running joke.

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"Now people just do it to bust my chops," says the Deepwater Horizon star. "If it happens, I don't try to correct people."

Wahlberg had a tougher time taking on the persona of real-life hero Mike Williams in Deepwater Horizon, but he was excited for the challenge, which included doing his own stunts. The actor-producer found himself jumping off of a 70-foot-tall oil rig and being set on fire.

"This man can do a lot of amazing things," Williams, who consulted on the film, tells ET.

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The movie, inspired by the oil rig explosion in the Gulf of Mexico that took place on April 20, 2010, honors the brave men and women whose heroism saved many on board during the world's largest man-made disaster.

Deepwater Horizon, also starring Kate Hudson, Kurt Russell, John Malkovich and Gina Rodriguez, hits theaters Sept. 30.