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.

Tired of people mispronouncing his last name, the 'It's Always Sunny' star and South Philly native has taken a name fans already know him by.

Rob McElhenney is legally changing his name to “Rob Mac” despite Ryan Reynolds creating a tune on how to correctly pronounce his last name.