diff --git a/lib/addns/dnsrecord.c b/lib/addns/dnsrecord.c
index 559c264..ee4026d 100644
--- a/lib/addns/dnsrecord.c
+++ b/lib/addns/dnsrecord.c
@@ -331,8 +331,8 @@ DNS_ERROR dns_create_probe(TALLOC_CTX *mem_ctx, const char *zone,
 			   const struct sockaddr_storage *sslist,
 			   struct dns_update_request **preq)
 {
-	struct dns_update_request *req;
-	struct dns_rrec *rec;
+	struct dns_update_request *req = NULL;
+	struct dns_rrec *rec = NULL;
 	DNS_ERROR err;
 	uint16 i;