Kimi Raikkonen is determined to race in the Singapore Grand Prix despite the back pain that left him only 13th on the grid.
An issue related to a trapped nerve left the Lotus driver in severe discomfort on Saturday.
The team got reserve driver Davide Valsecchi prepared to stand in before Raikkonen was cleared to drive in qualifying.
"This morning was very bad," Raikkonen admitted.
"It was good that we drove in qualifying in the end but not the most nice."
Raikkonen felt the pain in practice had cost him crucial qualifying set-up time.
"This morning I couldn't really try, so we probably didn't get done what we wanted with the car," he said, "but at least we got the car on the grid and we'll see what we can do tomorrow."
Asked if he felt he would be fit for the race, Raikkonen replied: "We will race and see what happens."