A British filmmaker forced the U.K. film board to watch 10 hours of paint drying because “it continues to censor and, in some cases, ban films.”

Director Charlie Lyne crowd-funded around $12,000 from 686 backers to fund Paint Drying, a 607-minute movie showing paint drying on a wall, which was submitted to the British Board of Film Classification (BBFC), an organization that must view and rate every movie before it is screened in the U.K.

“Sorry, everyone. I should really have put a spoiler tag on that. £5,936 well spent,” Lyne tweeted when he posted a description of the movie.

He also admitted that “to my great shame, I have not watched the film in its entirety,” on a Reddit ask-me-anything Q&A.

The film received a rating of U for universal, meaning it is suitable for anyone aged four and upwards to watch.

Amazingly, Paint Drying is not the longest movie the BBFC has rated. That prestigious honour goes to Out 1, a Jacques Rivette movie with a run-time of 775 minutes and 23 seconds.

Since 2012, the only movie banned by the BBC was 2015’s Hate Crime, a film depicting neo-Nazis harming a Jewish family.

“It is the board’s carefully considered conclusion that the unremitting manner in which Hate Crime focuses on physical and sexual abuse, aggravated by racist invective, means that, to issue a classification to this work, even if confined to adults, would be inconsistent with the board’s guidelines, would risk potential harm, and would be unacceptable to broad public opinion,” a statement from the BBFC read.