Actually, Rodolphus, I agree with you on the fact that subtitles are a canonical source, but they can make a mistake, as for :

  • the incantation Vera Verto/Fera Verto,
  • the potion Ageing Potion/Aging Potion
  • etc.

Follows (talk) 05:16, September 19, 2015 (UTC)

Except that Vera Verto is the correct incantation (see the page or the talk page for details), and "ageing" is the British English way of spelling "aging"; since the books are British, this wiki uses the British, and so "ageing" is correct. --Hunnie Bunn (talk) 12:19, September 19, 2015 (UTC)
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