diff --git a/lib/dns/zone.c b/lib/dns/zone.c
index e2800db233..1165e8f9c7 100644
--- a/lib/dns/zone.c
+++ b/lib/dns/zone.c
@@ -5813,7 +5813,8 @@ dns_zone_detach(dns_zone_t **zonep) {
 		 * Stop things being restarted after we cancel them below.
 		 */
 		DNS_ZONE_SETFLAG(zone, DNS_ZONEFLG_EXITING);
-		dns_zone_log(zone, ISC_LOG_INFO, "final reference detached");
+		dns_zone_log(zone, ISC_LOG_DEBUG(1),
+			     "final reference detached");
 		if (zone->task != NULL) {
 			/*
 			 * This zone has a task; it can clean