“Star Wars: The Force Awakens” spoilers are officially on the internet. With screenings taking place earlier this week for critics, reviews are making their way online. However, with fans seeing the movie as early as 7 p.m. on Thursday, it’ll be easy for anyone to spoil it soon. That's why Mark Hamill, who plays Luke Skywalker, has a special message. He wants everyone to keep their mouths shut.

Hamill is referencing a Season 3 episode of “The Simpsons.” In the episode, Homer and Marge see “The Empire Strikes Back,” and Homer talks about the ending as they walk out of the theater. “Wow, what an ending!” he says right next to a line full of people waiting to see the film. “Who’d of though Darth Vader was Luke Skywalker’s father?” Watch the scene below:

Luckily, the episode didn’t actually spoil the famous pop culture moment too soon. The episode aired more than 10 years after the film’s 1980 release.

Details about “Star Wars: The Force Awakens” have been locked away for months. Diehard fans have tons of questions about the seventh movie in the franchise. Why isn’t Luke in the trailers? Will Yoda get a cameo? Will there be any major deaths? Hamill, however, wants audiences to learn these answers in theaters, not online.

Hopefully, Hamill’s followers will listen to him, but not everyone is polite. Those who are extremely cautious can use several web browser extensions, like Force Block, to help avoid details. The extensions will warn users when they’re about to encounter anything related to “Star Wars,” and people can choose if they’re willing to take the risk or not.

“Star Wars: The Force Awakens” officially hits theaters on Friday, Dec. 18.