In a new interview with The Telegraph Magazine, Jessica Chastain revealed that she has been personally affected by Hollywood sexism. She tells a story about a time, early in her career, when she was working on a movie with “someone very important.” Although she doesn’t reveal the person’s name, she says, “I had been walking down the hall and they kind of spanked me on the butt. And I did turn around and say, ‘Did you just spank me?’ I was really upset about it. But in their mind it was completely normal.“

The thing is a story like this isn’t surprising; it’s actually pretty tame, considering what we can imagine goes on behind Hollywood office doors. Now that she’s a successful actress, Chastain works to raise awareness of the continued sexism in Hollywood. She told Variety, “A few years ago, I told myself I’m going to try to work with a female filmmaker every year. I’m not looking at it in terms of, ‘I’m going to push my career.’ I just think about society. I just want to do whatever I can to help push us forward. If that means I’m exhausted but there’s an opportunity to work with a female filmmaker and shine a light on this talent, how incredible.”

Last year, Chastain founded Freckle Films, an all-female production company. In March, she told American Way magazine she doesn’t understand why the rest of the industry isn’t working harder toward gender equality. “I’m doing my part to make the change, so why isn’t anyone else?”