At the 2018 Canadian Grand Prix, Harlow was invited to wave the chequered flag, signifying the end of the race. A miscommunication between race officials led to Harlow being instructed to wave the flag on what should have been the penultimate lap of the race. As a result of the application of the Formula One sporting regulations, the final result was declared based on the positions at the end of lap 68 (i.e., the official race distance was shortened by two laps from the scheduled distance of 70 laps). The error did not seriously impact the race result.