faire de ski or faire du ski

Question

I wrote "faire du ski." I think this is form give elsewhere on Lawless French.  Here the correct answer is given as "faire de ski."   Which is correct?

Accepted Answer

Hi Carl,
Interesting question!
It is because it is in the negative and on its own 
nous avons décidé de ne pas faire de ski = we have decided not to go skiing
but if you were comparing two activities you would say 
nous avons décidé de ne pas faire du ski mais de faire de la luge = We have decided not to ski but to go tobogganing instead
but 
nous avons décidé de ne pas faire de ski de fond = we have decided not to do any cross country skiing.
Take a look at this page from the Académie Française dealing with this very point  -
https://www.dictionnaire-academie.fr/article/QDL064
Hope this helps!

Answer

Its Faire du sporthttps://french.kwiziq.com/revision/grammar/faire-de-jouer-a-how-to-talk-about-leisure-activities