Swiss Civil Code

¹ Dis­pos­i­tions made in er­ror or un­der the in­flu­ence of ma­li­cious de­cep­tion, threats or co­er­cion are void.

² However, they be­come val­id if not re­voked by the test­at­or with­in one year of his or her dis­cov­er­ing the er­ror or de­cep­tion or of his or her re­lease from the threat or co­er­cion.

³ If a dis­pos­i­tion con­tains an ob­vi­ous er­ror with re­gard to per­sons or ob­jects and the test­at­or’s true in­ten­tion may be es­tab­lished with cer­tainty, the dis­pos­i­tion shall be rec­ti­fied ac­cord­ingly.