diff --git a/src/api/api_msg.c b/src/api/api_msg.c
index 8a2107c7..6b7eb44e 100644
--- a/src/api/api_msg.c
+++ b/src/api/api_msg.c
@@ -421,6 +421,7 @@ do_newconn(struct api_msg_msg *msg)
    TCPIP_APIMSG_ACK(msg);
 }
 
+#if LWIP_TCP
 static void
 do_close_internal(struct netconn *conn)
 {
@@ -458,6 +459,7 @@ do_close_internal(struct netconn *conn)
   /* If closing didn't succeed, we get called again either
      from poll_tcp or from sent_tcp */
 }
+#endif /* LWIP_TCP */
 
 /**
  * Delete the pcb inside a netconn.
diff --git a/src/netif/etharp.c b/src/netif/etharp.c
index 35d0b861..399c4060 100644
--- a/src/netif/etharp.c
+++ b/src/netif/etharp.c
@@ -559,6 +559,8 @@ etharp_find_addr(struct netif *netif, struct ip_addr *ipaddr,
 {
   s8_t i;
 
+  LWIP_UNUSED_ARG(netif);
+
 #if LWIP_NETIF_HWADDRHINT
   i = find_entry(ipaddr, ETHARP_FIND_ONLY, NULL);
 #else /* LWIP_NETIF_HWADDRHINT */