Lewis Hamilton chose to ignore suggestions from his team in one key area during qualifying at the Monaco Grand Prix.
Mercedes were struggling to switch on their tyres throughout a chaotic session and George Russell even ended up doing a build lap before pushing to the maximum.
Hamilton, though, went and pushed straight away and even though he out-qualified his team-mate, the seven-time world champion thought he'd made the wrong decision.
The Mercedes paired qualified sixth and eighth although their starting positions are still to be confirmed with Charles Leclerc under investigation for impeding Lando Norris in Q3.