Gen Prayut Chan-o-cha and his Cabinet attended the constitutional oath-taking ceremony before King Vajiralongkorn on 16 July 2019. 9 days later, Piyabutr Saengkanokkul spotted a mistake in the oath and consulted with the Speaker of Parliament about what to do, as the words that were spoken deviated from the oath as stated in Section 161 of the 2017 Constitution.