On 13 June 2012, Korec was admitted to the hospital for a ruptured appendix. He suffered a perforated appendicitis and severe peritonitis, and his vital signs were beginning to fail. The doctors operated on him, but his condition still remained critical. By 18 June, it was announced that his condition had not improved and that he was breathing only by a respirator. On 20 June, it was announced that the condition of Korec had significantly improved, which was a great surprise for all of Slovakia.