At the beginning of 2015, with Bony leaving to the 2015 Africa Cup of Nations Gomis became the main forward for the Swans, starting the year with a brace at Tranmere Rovers at Prenton Park in a 2–6 win in the FA Cup. On 10 January, after equalising in a 1–1 home draw against West Ham United, he displayed a French flag in support of victims of recent shootings in Paris. On 4 April 2015, Gomis scored in the 38th minute against Hull City with a volley and further sealed the victory by chipping the ball over the Hull City keeper giving him his first Premier League brace and Swansea City a 3–1 victory.