The Liévano–Brutus treaty is a treaty that defined the maritime boundary between the Republic of Colombia and Haiti. The treaty was signed in the town of Port-au-Prince on February 17, 1978. The treaty was approved by the Congress of Colombia by Law 12 of 1978. Ratification of the treaty was officially done on February 16, 1979. The treaty also stipulates that there must be cooperation on environmental issues and the protection of migratory species.