--- src/usr.sbin/zic/zic.c	2004/04/23 17:39:53	1.4
+++ src/usr.sbin/zic/zic.c	2004/11/25 01:01:33	1.5
@@ -1321,11 +1321,14 @@ puttzcode(const long val, FILE * const f
 }
 
 static int
-atcomp(void *avp, void *bvp)
+atcomp(const void *avp, const void *bvp)
 {
-	if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
+	const struct attype *ap = avp;
+	const struct attype *bp = bvp;
+
+	if (ap->at < bp->at)
 		return -1;
-	else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
+	else if (ap->at > bp->at)
 		return 1;
 	else	return 0;
 }