Disney and Universal are suing AI photo generation company Midjourney, marking the first major legal showdown between Hollywood studios and an artificial intelligence company.

Disney and Universal sued popular artificial intelligence image-generator Midjourney on Wednesday, marking the first time major Hollywood companies have taken legal action against a maker of generative AI technology that could upend the entertainment industry.

Disney and NBCU filed a federal lawsuit Tuesday against Midjourney, a generative AI start-up, alleging copyright infringement. The companies alleged that Midjourney’s own website “displays hundreds, if not thousands, of images generated by its Image Service at the request of its subscribers that infringe Plaintiffs’ Copyrighted Works.”