diff --git a/pkg/emb6/contrib/sock/udp/emb6_sock_udp.c b/pkg/emb6/contrib/sock/udp/emb6_sock_udp.c
index 20664c80b0..4693a4636a 100644
--- a/pkg/emb6/contrib/sock/udp/emb6_sock_udp.c
+++ b/pkg/emb6/contrib/sock/udp/emb6_sock_udp.c
@@ -84,7 +84,6 @@ int sock_udp_create(sock_udp_t *sock, const sock_udp_ep_t *local,
 
     (void)flags;
     assert((sock != NULL));
-    assert((local == NULL) || (local->port != 0));
     assert((remote == NULL) || (remote->port != 0));
     if (sock->sock.input_callback != NULL) {
         sock_udp_close(sock);