diff --git a/lib/dns/rpz.c b/lib/dns/rpz.c
index 45cf34217a..d4d5766c78 100644
--- a/lib/dns/rpz.c
+++ b/lib/dns/rpz.c
@@ -2126,7 +2126,7 @@ rpz_detach(dns_rpz_zone_t **rpzp) {
 		dns_db_detach(&rpz->db);
 	}
 	if (rpz->updaterunning) {
-		isc_task_purgeevent(rpz->rpzs->updater, &rpz->updateevent);
+		isc_task_purgeevent(rpzs->updater, &rpz->updateevent);
 		if (rpz->updbit != NULL) {
 			dns_dbiterator_destroy(&rpz->updbit);
 		}