Mark Ruffalo is no stranger to social media, but it seems the Marvel star got a little ahead of himself today. The actor went on Instagram live to hype fans for the premiere of Thor: Ragnarok, but it seems Ruffalo accidentally forgot to turn the app off before he stepped back into the theater.

Over on Twitter, fans are losing their minds after a some lucky fans happened to stick around for Ruffalo’s Instagram live feed. The actor popped on to address fans before Thor: Ragnarok had its world premiere in Los Angeles, but they quickly saw the actor hadn’t shut off his phone. The screen went black, but fans could still hear dialogue from the film playing. According to reports, anywhere from 10-15 minutes of audio was heard before Ruffalo’s feed shut off.

As you can see below, Marvel fans are laughing over the social media mishap. Plenty are begging for fans who recorded the audio to release it online, but others are having fun time ribbing the Hulk star for his gaff. Many have already crowned Ruffalo as the king of spoilers, dethroning Tom Holland from the spot. The latter gained the title earlier this year when he tried to livestream video of a trailer debut for Spider-Man: Homecoming.

It doesn’t appear that the feed dropped any major spoilers, but there are about 2,000 fans out there now who know how Thor: Ragnarok kicks off. Critics have said the film is the best Thor feature yet, so the movie must kick off with a feel-good vibe. You can read some tweets from those fans who were lucky enough to hear Ruffalo’s stream in the slides below:

Thor: Ragnarok opens in theaters on November 2, 2017.

Other upcoming Marvel Cinematic Universe movies include Black Panther on February 16, 2018, Avengers: Infinity War on May 4, 2018, Ant-Man and the Wasp on July 6, 2018, Captain Marvel on March 8, 2019, the fourth Avengers movie on May 3, 2019, the sequel to Spider-Man: Homecoming on July 5, 2019, and Guardians of the Galaxy Vol. 3 in 2020.