Eric Boullier admits "there is no excuse" for Romain Grosjean's accident in Monaco, but he believes it is important to cut the rookie some slack.
Grosjean started P4 on the grid in Monaco, but he made it three DNFs for the season after crashing out on the first lap following a collision with Michael Schumacher.
It has been the story of his season so far as he has showed plenty of promise during qualifying but mistakes here and there cost him during the races.
"With Romain, there is no excuse, but just one thing: all the drivers around him, they have done millions of miles of testing and many races before. He is still in his first year, so he has the right to do so [make mistakes]," Boullier is quoted as saying by Autosport.
"I think he is doing a pretty amazing job for a rookie driver and nobody on the grid today who started his career with no F1 testing and stepped into F1 has done as well as he is doing."