Russian authorities announced on Thursday that they have charged a 17-year-old from the Kursk region with “rehabilitation of Nazism” after he reportedly submitted a photograph of an adult film actor for a World War II memorial project.

The “Faces of Victory” memorial, situated near a government building in Zheleznogorsk in preparation for Victory Day in May, was designed to showcase portraits provided by locals honoring veterans of both World War II and Russia’s extensive military campaign in Ukraine.

A local activist later discovered a black-and-white picture of Billy Herrington, an American model and gay porn actor, among the submitted portraits. Herrington had gained international fame as a meme due to fan-created mash-up parodies, known as “Gachimuchi,” which utilized segments from his adult films.

Authorities revealed they found that the teenager had submitted the image of Herrington and further stated that he admitted to doing so as a prank.

On Thursday, the regional division of Russia’s Investigative Committee, responsible for significant criminal investigations, declared that the unnamed teen now faces legal charges.

Investigators indicated that Herrington’s photograph “showed signs of disrespect towards the honor and dignity of veterans of the Great Patriotic War,” which is Russia’s term for World War II.

They also mentioned that the teen had taken a picture of the memorial and shared it on social media “for the purpose of viewing and discussion among its users,” although they did not specify the platform. It remains unclear if he has been detained, as the investigation is ongoing.

Charges related to “rehabilitation of Nazism” can result in a maximum sentence of five years in prison. Civil rights advocates have criticized this law, introduced by President Vladimir Putin in 2014, for its ambiguous wording.