diff --git a/lib/dns/zone.c b/lib/dns/zone.c
index f9a7588442..440ce51f9a 100644
--- a/lib/dns/zone.c
+++ b/lib/dns/zone.c
@@ -13210,7 +13210,7 @@ stub_glue_response_cb(isc_task_t *task, isc_event_t *event) {
 		isc_buffer_t rb;
 
 		isc_buffer_init(&rb, opcode, sizeof(opcode));
-		(void)dns_opcode_totext(msg->rcode, &rb);
+		(void)dns_opcode_totext(msg->opcode, &rb);
 
 		dns_zone_log(zone, ISC_LOG_INFO,
 			     "refreshing stub: "