Marussia may have entered the summer break ninth in the Championship but Graeme Lowdon says they have a lot of hard ahead to hold onto the position.
Marussia jumped to ninth in the Championship at the Monaco Grand Prix when Jules Bianchi brought his car home in ninth place.
It was both the Frenchman and his team's first-ever World Championship points.
And although Marussia are dreaming of finishing this season ahead of Sauber and Caterham, sporting director Lowdon concedes a lot could still happen.
Asked by Crash.net when he 'might start believing finishing ninth is a realistic goal', Lowdon said: "When they've published the results in Abu Dhabi!
"Honestly, we know from Brazil in 2012. Timo Glock had that race sewn up as far as beating the other team was concerned and he got taken out behind the Safety Car.
"Those sorts of things can happen and that teaches you a pretty good lesson which is literally until the cars have crossed the line, the results are published and nobody protests!
"If we get to that stage it would be brilliant but there's a lot of hard work between now and then. Of course the other teams try equally hard as well, so it's not good enough for us to just stand still, we've got to be moving forward because the other guys will be pushing really hard.
"I'm really pleased to get where we've got to but we've got to just keep that focus moving through the next races. Some of them aren't really going to suit our car. We've just got to see what we can do. Hopefully try and stay out of trouble."
But whatever happens, Lowdon has everyone at Marussia has done a "great" job.
He added: "In terms of going in to the break it's without doubt the best we could expect. The guys have done a great job, raced the car and taken our chances when they've been there; which we have to do, we can't do it on raw pace at the moment."