The Treaty of Ribe (Danish: Ribe-brevet meaning The Ribe letter; German: Vertrag von Ripen) was a proclamation at Ribe made in 1460 by King Christian I of Denmark to a number of Holsatian nobles enabling himself to become Count of Holstein and gain control of the Duchy of Schleswig (Danish: Sønderjylland, i.e. South Jutland). The most famous line of the proclamation was that the Danish Duchy of Schleswig and the County of Holstein within the Holy Roman Empire, should now be, in the original Middle Low German language, Up Ewig Ungedeelt, or "Forever Undivided".