Pierre Gasly used the Pirelli tyres for too long in practice after communication issues with his team.
The Toro Rosso driver finished in an impressive eighth place in the first practice session.
However, Gasly was left with a Technical Delegate's Report and was as a result fined €10,000, according to Autosprint.
The drivers are meant to swap their tyres after 40 minutes of driving on them.
Gasly didn't come back inside, though, and this is likely down to communication issues he had with his Toro Rosso team.