Producers of the film Ender's Game have made the claim that Orson Scott Card, who wrote the book the film is based on, “won't profit” from ticket sales.

A proposed boycott of the film over Card's anti-gay views and his support of groups that oppose marriage equality have put a damper on the movie's upcoming November 1 release in the United States.

Until recently, Card was a board member of the National Organization for Marriage (NOM), the nation's most vociferous opponent of marriage equality.

In an effort to head off the boycott, producers have been scrambling to distance the film from its author.

TheWrap reported: “But multiple sources from both inside and outside the companies that produced the Ender's Game film – distributor Summit Entertainment, visual effects company Digital Domain and book-rights holder OddLot Entertainment – tell TheWrap that Card's fee has already been paid through a decade-old deal that includes no backend.”

The outlet goes on to report that Card was paid $1.5 million in 1996 to option the book.

However, there is no mention of whether Card would profit from sequels to Ender's Game. According to early reviews, the movie's plot leaves open the possibility.

(Related: Orson Scott Card's anti-gay marriage views at odds with Ender's Game, says Gavin Hood.)