Michael Schumacher is "still fighting" to recover from his head injuries, according to FIA president Jean Todt.
Seven-time world champion Schumacher was involved in a skiing accident in December of 2013, when he fell and hit his head on a rock, sustaining head injuries.
Schumacher has been recovering at home since September of last year, with his manager Sabine Kehm having reported that his conditions had been improving.
Todt, a close friend of the German's, says he visits him very often to check on his progress.
The FIA president also hailed Schumacher's achievements compared to those of Lewis Hamilton, who just secured his third Formula 1 title.
"It was interesting last week after Lewis was world champion for the third time," Todt said in Mexico on Saturday.
"You saw the figures – I was very proud of what Michael did, and you tend to forget what Michael did.
"Michael is a close friend, his family is very close to me, I am very close to them as well, I see Michael very often, and Michael is still fighting.
"We must keep him fighting for the family."