diff --git a/bin/named/fuzz.c b/bin/named/fuzz.c
index b0ac889408..542899c5ff 100644
--- a/bin/named/fuzz.c
+++ b/bin/named/fuzz.c
@@ -305,6 +305,7 @@ fuzz_main_resolver(void *arg) {
 	}
 
 	free(buf);
+	free(rbuf);
 	close(sockfd);
 	ns_server_flushonshutdown(ns_g_server, ISC_FALSE);
 	isc_app_shutdown();