Makoun made his Antalyaspor debut, coming on as a 77th minute substitute, in a 2–0 win against Eskişehirspor on 12 September 2015. Since making his debut for the club, he found himself in and out of the starting line–up, due to being placed on the substitute bench. It wasn't until on 5 February 2016 when Makoun scored his first Antalyaspor goal, in a 4–2 win against Fenerbahçe. Two months later on 3 April 2016, he scored his second goal for the club, in a 2–2 draw against Akhisar Belediyespor. Two weeks later on 16 August 2016, Makoun set up two goals for Antalyaspor, as they won 4–2 against Galatasaray. He scored his third goal of the season, as well as, setting up a goal, in a 7–0 win against Trabzonspor on 13 May 2016. At the end of the 2015–16 season, Makoun went on to make thirty–one appearances and scoring three times in all competitions.