Ron Livingston is taking legal action against an unknown internet prankster who keeps hacking into his Wikipedia page and claiming the actor is gay.

The 42 year old, who is married to Rosemarie DeWitt, filed suit at Los Angeles County Superior Court on Friday alleging a "malicious" hacker is continually breaking into his information page on the website.

The papers reveal the online joker - who is not named in the documents - has allegedly published claims the star is in a relationship with a man named Lee Dennison, and created a false profile on social networking site Facebook.com, which again suggests the actor is homosexual.

He is suing for libel, invasion of privacy and using his image without prior permission, according to TMZ.com.

At time of press, Livingston's Wikipedia page has been changed to say he is married to Dewitt.

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(This news article provided by World Entertainment News Network)