(745 ILCS 10/2-203) (from Ch. 85, par. 2-203)
Sec. 2-203.
If a public employee acts in good faith, without malice, and under the apparent authority of an enactment that is unconstitutional, invalid or inapplicable, he is not liable for any injury caused thereby except to the extent that he would have been liable had the enactment been constitutional, valid and applicable.
(Source: Laws 1965, p. 2983.)