JK Rowling has come under fire from one of the UK's most successful writers.
Fantasy author Terry Pratchett, who has sold 40m books, said the attention lavished on the Harry Potter creator meant other writers were overlooked.
He said fantasy fiction included "some of the very best writing for children by writers who seldom get the acknowledgement they deserve".
JK has said she's "not a huge fan of fantasy" and only realised Harry fitted in with this when her work came out.
In a letter to the Sunday Times, Mr Pratchett said: "I'm not the world's greatest expert, but I would have thought that the wizards, witches, trolls, unicorns, hidden worlds, jumping chocolate frogs, owl mail, magic food, ghosts, broomsticks and spells would have given her a clue?"
JK's latest book, Harry Potter and the Half-Blood Prince, sold almost 9m copies in the UK and US in its first 24 hours of release on 16 July.