After winning a race over 1200 metres on his racecourse debut, Argument was moved up in class and distance for the group Three Prix La Rochette over 1600m at Longchamp Racecourse on 2 September. Ridden by Jean-Claude Desaint, he started the 9/4 second favourite and finished second, beaten a neck by Un Reitre, with the future Grand Critérium winner Dragon two lengths away in third place. Two weeks later he started second favourite for the Prix des Chênes over the same course and distance but finished fourth behind In Fijar.
