Mercedes team boss Toto Wolff would back changes to the regulations to allow "harder racing" in Formula One, but believes the stewards at the Canadian Grand Prix got Sebastian Vettel's penalty right by the wording of the current rule book.
Mercedes driver Lewis Hamilton won Sunday's race after Vettel, who finished ahead of him on the road, was penalised five seconds for an incident on lap 48.
The Ferrari driver was in the lead of the race when he ran wide at Turn 3 and rejoined on the exit of Turn 4 directly in front of Hamilton.