diff --git a/src/netif/ethernetif.c b/src/netif/ethernetif.c
index dc8ae6c4..7867c882 100644
--- a/src/netif/ethernetif.c
+++ b/src/netif/ethernetif.c
@@ -318,7 +318,9 @@ ethernetif_init(struct netif *netif)
    * You can instead declare your own function an call etharp_output()
    * from it if you have to do some checks before sending (e.g. if link
    * is available...) */
+#if LWIP_IPV4
   netif->output = etharp_output;
+#endif /* LWIP_IPV4 */
 #if LWIP_IPV6
   netif->output_ip6 = ethip6_output;
 #endif /* LWIP_IPV6 */