Mich. Comp. Laws § 552.30: Legitimacy of issue; dissolution of marriage.

Sec. 30.

Upon the dissolution of a marriage because of a party's non-age at the time of the marriage, or because a party was otherwise not capable in law of contracting at the time of the marriage, the issue of the marriage are in all respects the legitimate issue of the parent who, at the time of the marriage, was capable of contracting.