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.

The 'It's Always Sunny in Philadelphia' actor and creator's new name already appears in FX's official materials for the long-running sitcom

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