United Kingdom, May 2 -- Penn Badgley's friends have been calling his son by the wrong name after a mistake on the Internet became difficult to correct.

The 'You' star is dad to a four-year-old son with his wife Domino Kirke and the couple has never publicly revealed what he's called, but the youngster has been mistakenly named online as "James" and the misunderstanding has led to family friends referring to the little boy by the wrong name.

During an appearance on 'The Tonight Show Starring Jimmy Fallon', Penn explained: "This is a very weird thing to say but our littlest who is four . His name is not James.

"The Internet, on Wikipedia, for many years, his name was James. And we'd get it removed, it would go back. His name's not James...