The Portuguese expedition to Otranto in 1481, which the Portuguese call the Turkish Crusade (), arrived too late to participate in any fighting. On 8 April 1481, Pope Sixtus IV issued the papal bull "Cogimur iubente altissimo", in which he called for a crusade against the Turks, who occupied Otranto in southern Italy. The Pope's intention was that, after recapturing Otranto, the crusaders would cross the Adriatic and liberate Vlorë (Valona) as well.