(36)For a period of five years from the date of application of this Regulation, or until the date of application of the changes adopted to Regulation (EU) No 575/2013 and Directive 2013/36/EU as regards own funds requirements for market risk pursuant to Chapters 1a and 1b of Title IV of Part Three of Regulation (EU) No 575/2013, as amended by Regulation (EU) 2019/876, whichever is later, investment firms subject to the corresponding provisions of this Regulation should continue to calculate their own funds requirement for the trading book in accordance with Regulation (EU) No 575/2013, as amended by Regulation (EU) 2019/630.