Two-time world champion Mika Hakkinen believes Haas' Kevin Magnussen needs to change his aggressive approach to driving or risk a permanently tainted reputation.
The US outfit has undoubtedly made a step forward this season, thanks to the level of performance of its VF-18.
Magnussen has outpaced team mate Romain Grosjean, putting all of the team's 19 points on the table, but the Dane has also been involved in several on-track spats and near-misses, banging wheels at high speed with Toro Rosso's Pierre Gasly in Baku and moving over carelessly on Sauber's Charles Leclerc in Spain.
The stewards took action against Magnussen in the first instance, but the second case did nothing to help his already blistered reputation.
"I have known Kevin for some time, as I knew his father Jan, and it's good to see him producing some great results for Haas," Hakkinen wrote for Unibet.
"I have mixed feelings, however, because while I think it’s important for a driver to show his strength and commitment to the job, there have to be limits to what you are prepared to do in a race.
"In the previous Grand Prix in Baku, I felt his move on Pierre Gasly was a big mistake, and in this business you don’t have to do that very often before you earn a bad reputation."
The chances of Magnussen agreeing to the former McLaren driver's expert opinion are slim, but there's no doubting the 25-year-old needs to rein it in or risk potentially dire consequences the next time his distraction or excessive resolution gets the better of him.