Lewis Hamilton has said that he still does not want to wear the number one in 2018.
Traditionally in Formula 1, the world champion wears the number one the following year.
However, since drivers have been allowed to personalise their permanent numbers since a few years ago, champions actually had the option of not wearing number one.
Hamilton is among the drivers who have built their number - in the Briton's case '44' - into a personal brand, and the Mercedes driver says that he wants to keep it for 2018.
"My engineers want me to and some other people want me to," he admitted to Brazil's Globo.
"They're trying to get me to put the number one on the car, but I don't plan to change. The 44 is personal. Everyone has a lucky number.
"Maybe I'll put the one in the 44 or something -- maybe we can play around and do something like that. But I really don't like this number one thing. Other drivers have had it in the past but 44, that's mine."
Hamilton will enter the 2018 world championship a four-time champion after this year's victory.
