diff --git a/sys/security/mac_do/mac_do.c b/sys/security/mac_do/mac_do.c
--- a/sys/security/mac_do/mac_do.c
+++ b/sys/security/mac_do/mac_do.c
@@ -329,12 +329,6 @@
     0, 0, sysctl_rules, "A",
     "Rules");
 
-static void
-destroy(struct mac_policy_conf *mpc)
-{
-	osd_jail_deregister(mac_do_osd_jail_slot);
-}
-
 static int
 mac_do_prison_set(void *obj, void *data)
 {
@@ -452,6 +446,12 @@
 	sx_sunlock(&allprison_lock);
 }
 
+static void
+destroy(struct mac_policy_conf *mpc)
+{
+	osd_jail_deregister(mac_do_osd_jail_slot);
+}
+
 static bool
 rule_applies(struct ucred *cred, struct rule *r)
 {