Section 5, Marriage and Divorce Act, 2007

(1) A court may, on application, by order declare acustomary marriage invalid on the grounds that either of the spouses is a minor. (2) An application for an order under subsection (1) may be made by– (a) either of the spouses to the marriage before the attainment of majority or within a reasonable time thereafter; or (b) the guardian of a minor spouse, if he applies before the spouse attains majority and within a reasonable time of becoming aware of the existence of the marriage.