Harrison Ford, the star of the upcoming big screen adaptation of Ender's Game, has dismissed the controversy surrounding the film over its author's anti-gay activism.

Speaking in London to promote Ender's Game, Ford said that Orson Scott Card's views are not relevant to the film.

“This movie doesn't address any of those issues,” Ford is quoted as saying by UK's The Guardian. “It was written 28 years ago; it's a very impressive act of imagination that he could predict the Internet, and he could predict drone warfare … There is nothing in the film or the book addressing his current dispositions, or prejudices. We care about the positive aspects of the story we are telling.”

Director Gavin Hood said that he disagreed with Card: “It's well known Orson Scott Card and I have different views on the issue of gay marriage and gay rights.”

The group Geeks OUT has been calling for a boycott of the film.

In July, Card, who until recently was a board member of the National Organization for Marriage (NOM), pleaded for tolerance, saying that two recent Supreme Court rulings that knocked down the Defense of Marriage Act (DOMA) and led to the return of same-sex marriages in California, made the issue moot.

“Now it will be interesting to see whether the victorious proponents of gay marriage will show tolerance toward those who disagreed with them when the issue was still in dispute,” he wrote.

But the group rejected the plea, saying that nothing is “more democratic and tolerant than a consumer boycott, rooted in the ideas of free market accountability.”

Ender's Game stars Ford, Sir Ben Kingsley and Abigail Breslin. It is set to open in November.