Promotional activities for the entry prior to the contest included performances of the song in both Amsterdam and London. Cyprus was drawn to compete in the second semi-final of the Eurovision Song Contest which took place on 21 May 2015. Performing during the show in position 15, "One Thing I Should Have Done" was announced among the top 10 entries of the second semi-final and therefore qualified to compete in the final on 23 May. It was later revealed that Cyprus placed sixth out of the 17 participating countries in the semi-final with 87 points. In the final, Cyprus performed in position 11 and placed twenty-second out of the 27 participating countries, scoring 11 points.
