S.D. Codified Laws § 53-5-3

Current with legislation signed by the governor on or before 3/6/2024
Section 53-5-3 - Unlawfulness of object and impossibility of performance renders contract void

Where a contract has but a single object and such object is unlawful in whole or in part, or wholly impossible of performance, or so vaguely expressed as to be wholly unascertainable, the entire contract is void.

SDCL 53-5-3

CivC 1877, § 904; CL 1887, § 3528; RCivC 1903, § 1222; RC 1919, § 837; SDC 1939, § 10.0403.