diff --git a/examples/ipv6/rpl-udp/udp-server.c b/examples/ipv6/rpl-udp/udp-server.c
index 8544d04c3..11677c114 100644
--- a/examples/ipv6/rpl-udp/udp-server.c
+++ b/examples/ipv6/rpl-udp/udp-server.c
@@ -69,7 +69,7 @@ tcpip_handler(void)
 #if SERVER_REPLY
     uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
     uip_udp_packet_send(server_conn, "Reply", sizeof("Reply"));
-    memset(&server_conn->ripaddr, 0, sizeof(&server_conn->ripaddr));
+    uip_create_unspecified(&server_conn->ripaddr);
 #endif
   }
 }