Mark Ruffalo accidentally livestreamed audio from the Thor: Ragnarok premiere

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Thor: Ragnarok, the latest Marvel Studios film and the third to focus on the God of Thunder, had its world premiere at Los Angeles's El Capitan Theater Tuesday night, and a few lucky fans actually got a bigger peek than they were supposed to, thanks to co-star Mark Ruffalo.

Ruffalo, who returns as Bruce Banner/The Hulk for the film, joined his co-stars onstage prior to the film beginning, and decided he would broadcast the moment via Instagram livestream. Guests at the premiere were supposed to surrender their phones to security prior to the screening, but apparently this rule did not apply to the film's stars. So Ruffalo hit the stage, intending only to livestream the curtain-call moment and capture the audience's reaction. Then he put his phone in his pocket for the start of the film, but somehow forgot to turn off the livestream.

"About 2,500" fans following Ruffalo's stream kept watching even as Ruffalo's phone went dark in his pocket, and portions of the film were "clearly audible," according to The Hollywood Reporter. At about 8:15 p.m., the livestream ended, but not before Ruffalo's Instagram audience got to hear a portion of the film. It's not clear if any spoilers were given away by the incident, but Twitter was clearly amused by the mistake.

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Hey, we all make mistakes with our phones sometimes, even Science Bros.

Thor: Ragnarok is in theaters November 2.