Despite a Sebastian Vettel podium, Ferrari did not have a very strong race weekend during the British Grand Prix at Silverstone.
Vettel, who benefited by pitting for inters at exactly the right time, had further fortune due to Williams serious lack of pace in the wet. His team-mate, Kimi Raikkonen, who is fighting for his 2016 seat at the Italian outfit, could only finish in eighth after his gamble to pit early, backfired.
The Finn believes that Ferrari will bounce back after their struggles at Silverstone, a circuit he feels did not suit the SF15-T.
"We've seen at other circuits it depends a lot on the layout of the circuit and what tyres we run," said the Finn told Autosport.
"I expect it to be a different story in the next race and at different circuits again.
"Silverstone is not ideal for us – the layout, conditions and tyres – but we have to improve and we have to try to get better whatever circuit it is.
"Hungary I'm sure it will [be better]. Silverstone was not the ideal weekend.
Felipe Massa, who along with team-mate Valtteri Bottas stormed to the front of the British Grand Prix, believes the Grove based outfit can be a major thorn in Ferrari’s side for the rest of the season.
Williams have managed to be get close to the pace of Ferrari on numerous occasions already this season.
"Unfortunately we started the season a little bit behind but maybe Sunday was a very interesting race to catch the Ferraris a little bit," said Massa.
"We have a quicker car in qualifying and in the race at Silverstone which has never happened this season. It shows we are in the fight.
"In Austria, we had the upgrades arrive in the car but it was not working the right way.
"But we understood where to make it work at Silverstone and everything we tried to change from the last race to this race it worked and the car was quicker.”
Mass also feels that Williams are constantly improving in their ability to develop their car as the season progresses.
"So I think we're showing one more time we know how to develop the car from the first race to the last race."