Last month, Samoa's former head of state, Tui Atua Tupua Tamasese Efi, said ambiguity in article 102 of the constitution was leading to customary land being alienated.
He called for legal minds to come together to address the problem.
But the O Le Siosiomaga Society said Tui Atua's statement was puzzling.
The NGO's chief executive, Fiu Mataese Elisara, said he was unable to trust any suggestion that solving the customary land issue should be through legal experts or the courts.