Michigan Compiled Laws, Chapters 760 to 777 Code of Criminal Procedure § 768.21c

Sec. 21c. (1) In cases in which section 2 of the self-defense act  1 does not apply, the common law of this state applies except that the duty to retreat before using deadly force is not required if an individual is in his or her own dwelling or within the curtilage of that dwelling.

(2) As used in this section, “dwelling” means a structure or shelter that is used permanently or temporarily as a place of abode, including an appurtenant structure attached to that structure or shelter.