diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index ab4344d74a..11a57ca681 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -7095,6 +7095,7 @@ resume_dslookup(void *arg) {
 
 	case ISC_R_SHUTTINGDOWN:
 	case ISC_R_CANCELED:
+		dns_rdataset_cleanup(frdataset);
 		goto cleanup;
 
 	default: