The copyright office was reviewing a graphic novel called Zarya of the Dawn, authored by Kris Kashtanova and featuring images produced using Midjourney. The office wrote in a Tuesday letter that Kashtanova would receive copyright protection for the parts they wrote, selected, and arranged, but not for the A.I.-generated images in the novel since it was “not the product of human authorship.” Kashtanova was not considered the “inventive or master mind” of the graphics. 

In the case of non-human authorship, “copyright does not protect the alleged creation,” the Copyright Office’s letter said. The office will now issue a new registration for Kashtanova’s graphic novel with its images omitted, as the initial submission for copyright did not disclose the use of A.I. 

Kashtanova claimed that the copyright should apply to their artwork too, as each artist would render a different text prompt yielding different images. But the office held that prompts are akin to suggestions rather than orders and that spending “time and effort” with an A.I. art generator does not result in authorship or ownership.

“The fact that Midjourney’s specific output cannot be predicted by users makes Midjourney different for copyright purposes than other tools used by artists,” the letter said, referring to other programs like Adobe’s Photoshop. 

The Copyright Office and Midjourney did not immediately return Fortune’s request for comment made outside regular operating hours. 

A.I. tools like ChatGPT and Dall-E are making waves with their potential to serve a wide variety of uses, from test-taking to visual design, with simple text prompts. Big Tech companies like Google and Microsoft are vying to get a slice of the generative A.I. pie by developing new products or upgrading existing ones with A.I. capabilities.

Generative A.I. is already the subject of a debate over copyright, as human artists accuse the programs—and the companies that develop them—of facilitating the copying of their work. Image-generation tools powered by A.I. are typically trained with a database of pictures and artworks, which is increasingly becoming a flashpoint prompting legal action. Getty Images filed a claim against Stability A.I., which also turns text inputs into images like Midjourney and Dall-E, for unlawfully copying and processing copyrighted material. 

A group of artists also filed a class-action lawsuit against platforms like Stability A.I. after their artwork was found to have been used to train the A.I. models. 

Despite the Copyright Office’s denial of protections for their Midjourney-generated artwork, Kashtanova said the decision, even if it counts out the images themselves, still protects many aspects of the output for those in the A.I. art community. 

And the ruling could provide greater clarity for creatives as to how much original work they need to do when using these programs. Midjourney’s general counsel Max Sills told Reuters that the office’s decision was “a great victory,” as it proves that “if an artist exerts creative control over an image generating tool like Midjourney…the output is protectable.”