The Guerin case (R. v. Guerin) resulted in a pivotal decision by the Supreme Court of Canada in 1984 about Indigenous rights. It centred on the fiduciary (guardian or trustee) responsibility of the Crown to consult openly and honestly with Indigenous peoples before making arrangements for the use of their land. (See also Duty to Consult.) For the first time, it established that the Crown has a legal responsibility to First Nations and not simply a moral one. It also recognized Aboriginal title to their land to be a sui generis (Latin for “unique”) right.