State Ministers Palitha Range Bandara and Wasantha Senanayake, who were strong advocates of the no-confidence motion previously, said they would vote against it.
Addressing a press conference a short while ago, they said they would support Prime Minister Ranil Wickremesinghe at the vote tonight.
Range Bandara earlier said nearly 27 MPs from the UNP supported the no-confidence motion.
During today's press conference, he said all these MPs will now oppose the no-confidence motion against the Prime Minister.