Lotus driver Romain Grosjean has apologised to Will Stevens for colliding with the Briton during the Canadian Grand Prix.
Grosjean was lapping the Manor Marussia driver on the run to the final chicane but moved over on his rival, causing damage to the front wing of Stevens' car.
Grosjean was forced to make an extra stop and slumped to 10th place, though the time penalty which he received for causing the collision did not affect his final result.
"It can be difficult with traffic here and I was held up a few times even when there were blue flags," said Grosjean.
"I thought I was past the Manor, but it was soon clear that I wasn’t. It was my fault entirely and I apologise for it. You never stop learning as a driver."
Stevens also had to pit for repairs before coming home as the last classified finisher in 17th position.
"It was a little surprising as I left him so much room," said Stevens.
"It was an unnecessary accident and one which required another pit stop for front wing damage. The wing was snapped clean in two."
Grosjean was also handed two penalty points for the incident.