PHILADELPHIA — "It’s Always Sunny in Philadelphia" star Rob McElhenney is tired of people mispronouncing his last name — so he found a solution. Last week, the actor decided to adopt the name fans have called him for 20 years.

Rob McElhenney has filed legal documents to change his name. The actor reportedly signed the docs Thursday requesting that his surname be changed to Mac — so his new name will be Rob Mac, according to multiple outlets.

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.