Lupita Nyong'o thinks there is a "real imbalance" in Hollywood.
The Star Wars: The Force Awakens actress believes there needs to be a big "change" in order to include more black actors, writers and directors in the industry.
She told InStyle magazine: "There is a real imbalance, from the very creation of the stories and who's telling them, how and why. Change has to happen with the writers, the studio, the marketers, the directors.
"That's got to be diversified because there is a hunger for the expansion of the role of people of colour in the center of narratives."
Meanwhile, the 33-year-old star previously expressed her "disappointment" over the lack of diversity at last month's Academy Awards.
In an open letter, she wrote at the time: "I am disappointed by the lack of inclusion in this year's Academy Awards nominations.
It has me thinking about unconscious prejudice and what merits prestige in our culture.
"The Awards should not dictate the terms of art in our modern society, but rather be a diverse reflection of the best of what our art has has to offer today. I stand with my peers who are calling for change in expanding the stories that are told and recognition of the people who tell them."
- BANG! Showbiz