diff --git a/apps/udpecho/udpecho.c b/apps/udpecho/udpecho.c
index f2842d7..9bf2de2 100644
--- a/apps/udpecho/udpecho.c
+++ b/apps/udpecho/udpecho.c
@@ -43,10 +43,8 @@
 static void
 udpecho_thread(void *arg)
 {
-  static struct netconn *conn;
-  static struct netbuf *buf;
-  static ip_addr_t *addr;
-  static unsigned short port;
+  struct netconn *conn;
+  struct netbuf *buf;
   char buffer[4096];
   err_t err;
   LWIP_UNUSED_ARG(arg);
@@ -58,8 +56,6 @@ udpecho_thread(void *arg)
   while (1) {
     err = netconn_recv(conn, &buf);
     if (err == ERR_OK) {
-      addr = netbuf_fromaddr(buf);
-      port = netbuf_fromport(buf);
       /*  no need netconn_connect here, since the netbuf contains the address */
       if(netbuf_copy(buf, buffer, buf->p->tot_len) != buf->p->tot_len) {
         LWIP_DEBUGF(LWIP_DBG_ON, ("netbuf_copy failed\n"));