Mont. Code Ann. § 70-1-403

Condition precedent requiring wrongful act

If a condition precedent requires the performance of an act wrong of itself, the instrument containing it is so far void and the right cannot exist. If it requires the performance of an act not wrong of itself, but otherwise unlawful, the instrument takes effect and the condition is void.

History:
En. Sec. 1142, Civ. C. 1895
Re-en. Sec. 4460, Rev. C. 1907
Re-en. Sec. 6702, R.C.M. 1921
Cal. Civ. C. Sec. 709
Field Civ. C. Sec. 198
Re-en. Sec. 6702, R.C.M. 1935
R.C.M. 1947, 67-403.