12/01/2016 03:35 GMT | Updated 12/01/2016 03:59 GMT

J.K. Rowling Admits She Once Vandalised A Bust In A Hotel Room After Finishing 'Harry Potter' Book

Lefteris Pitarakis/AP
FILE - In this Thursday, Sept. 27, 2012 file photo, British writer J.K. Rowling poses for photographers during a photo call to unveil her new book, entitled: 'The Casual Vacancy', in London. Author JK Rowling has accepted a charitable donation from a law firm, Wednesday July 31, 2013, which revealed she wrote a crime novel under a pseudonym. The Harry Potter author says her crime-writing alter ego, Robert Galbraith, had respectable sales before being exposed in the Sunday Times as a pseudonym. (AP Photo/Lefteris Pitarakis, File)

J.K. Rowling has admitted she graffitied a bust in the hotel room in which she finished writing 'Harry Potter and the Deathly Hallows'.

The author made the confession on Twitter adding: "Never do this. It's wrong."

Monday marked the 9-year anniversary of the completion of the novel and it seems the years of guilt have finally caught up with her.

It's unlikely the owners of the Balmoral Hotel in Edinburgh will mind though, the writing has undoubtedly boosted the value of the room significantly.

The Grand Suite room is listed online as having such visitors as "Braemar, Stirling, Dunrobin, Tay and JK Rowling".

A night in the room will set you back £810 a night and fans have been flocking there for years.