FAOR in two places

FAOR is OR Tambo International in Joburg.
FAOR is also Olifants river landing strip in Limpopo
Can someone explain this?

The first one OR Tambo is the official ICAO designator

The correct ICAO designator for Olifants River landingstrip is FAOO. So it seems there is a typo in the designator for Olifants River

Aha thanks Tom, Error on the Airports guide website. I will send them a mail.