Some “Game of Thrones” fans are concerned that the HBO series is passing George R.R. Martin’s source material — but not star Maisie Williams.

The 18-year-old actress, who plays Arya Stark on the hit show, appeared on “Late Night with Seth Meyers” Wednesday night to promote the upcoming sixth season of “Game of Thrones.” While sitting down with host Seth Meyers, Williams revealed that it’s not a bad thing that the series has passed the “A Song of Ice and Fire” books.

“I think now we get the opportunity to shape the series from start to end without having to hit any plot pints at certain moments,” the starlet explained. “They have actually made it into a better-flowing series, in my opinion. Particularly I feel for my storyline, I feel like I’m not in it quite as much, but my story flows a lot nicer than it has in previous years.”

Seven books make up Martin’s “A Song of Ice and Fire” series but only five have been released. Fans have been waiting on the sixth installment, “The Winds of Winter,” ever since the fifth book came out in 2011. Despite making some small changes, “Game of Thrones” caught up to the books at the end of Season 5. And unfortunately, the 67-year-old author confirmed in January that his devoted readers wouldn’t be able to get their hands on book six ahead of the Season 6 premiere.

“You wanted an update. Here’s the update. You won’t like it,” he wrote on his “Not A Blog” LiveJournal page. “‘The Winds of Winter’ is not finished.”

Despite wanting to have the sixth book published before the return of “Game of Thrones,” he revealed that part of the delay was due to missing two deadlines. He even canceled a couple of appearances and decided not to write an episode of the upcoming season in an attempt to speed up the process of finishing the book.

Those worried about the show spoiling the books need not worry, though. In February Martin told IGN that he decided to incorporate a plot twist into his book that would be impossible to carry out onscreen. The twist involves a character that was killed off on the show already.

“But that doesn’t narrow it down much because at this point there are like 15 characters that are dead in the show but still alive in the books,” he teased without giving away any major details. “I get all this stuff about being bloody-minded, but [showrunners David Benioff and D.B. Weiss] are bloodier than I am.”

“Game of Thrones” Season 6 premieres on HBO on April 24. No release date for “The Winds of Winter” has been announced yet.