Rob McElhenney, soon to be known as Rob Mac, is defending the decision to change his last name. In a recent post on X, McElhenney shared a brief video explaining why he abridged his last name for those still scratching their heads over the news.

Rob McElhenney has legally filed to change his name to Rob Mac, after previously sharing that people would often mispronounce his surname. The 'It’s Always Sunny in Philadelphia' star and creator has already been credited under his new name in FX's official materials for the long-running sitcom.