The 1980 season did not start very well as he finished only fourth at the 1980 European Indoor Championships in Sindelfingen, West Germany, the competition won by the Soviet Konstantin Volkov, who would be Kozakiewicz's main rival at the upcoming Moscow Olympics. However, in May that year at a meeting in Milan, Kozakiewicz for the first time in his career broke the world record with a mark of 5.72 metres. The record was later that summer bettered by two Frenchmen, first Thierry Vigneron added three centimetres to it and then Philippe Houvion another two, setting it at 5.77 metres.