The boundary terminates just short of an equidistant line between Malta and the Italian Pelagie Islands and the westernmost point of the boundary line forms a maritime tripoint with Algeria.[4] On 23 January 1975, the countries by agreement added supplemental minutes to the treaty, including a map of the boundary and 32 individual coordinate points that define it. It came into force on 6 December 1978 after it was ratified by both countries.