Britain's Got Talent 2017 hopefuls Gao Lin and Liu Xin are facing controversy after it emerged that their participation breaches the show's terms and conditions.
The husband and wife duo travelled from Beijing, China to compete in this year's series of the ITV talent contest.
But according to The Sun, the visa they used to enter the UK for filming only gave them visitation rights.
Although they did not break the law by taking part in the show, BGT's own rules state that contestants "must have the right to live and work in the UK, Channel Islands, Isle of Man or Republic of Ireland".
However, it appears Gao and Liu aren't to blame for the blunder.
An insider told the newspaper that the couple had gone by an outdated version of the T&Cs on the internet.
Bosses apparently failed to properly correct the web page after the terms were last updated in January 2015.
"This is a case of a cock-up rather than conspiracy," the source commented.
"There are some serious red faces amongst the administrators over why the up-to-date terms and conditions weren’t included when this first went online. Someone’s going to get a telling off."
It is unclear whether the mix-up will put Gao and Lin's future on Britain's Got Talent in jeopardy.
Responding to the story, a BGT spokesperson pointed out that they are not employees of the show.
"Gao Lin and Liu Xin are technically allowed to enter BGT," the rep stated. "As BGT is a talent competition and contestants are not employed, Gao Lin and Liu Xin are not in breach of their visitor visa.
"However, there was an administrative, clerical error in terms of updating the website and the terms and conditions. This is now being resolved."
Gao and Liu appeared on Saturday's auditions episode, wowing the judges with an acrobatic dance display.
They have already found themselves in hot water after a Ukrainian act accused them of copying the routine.