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 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 actor says the change will aid his business ventures, which include ownership stakes in several international soccer clubs.