diff --git a/src/include/lwip/netif.h b/src/include/lwip/netif.h
index 32f99412..7bd4caef 100644
--- a/src/include/lwip/netif.h
+++ b/src/include/lwip/netif.h
@@ -280,7 +280,7 @@ struct netif {
   /** counters */
   u32_t ifinoctets;
   u32_t ifinucastpkts;
-  u32_t ifinnucastpkts; /* @todo: never incremented */
+  u32_t ifinnucastpkts;
   u32_t ifindiscards;
   u32_t ifoutoctets;
   u32_t ifoutucastpkts;
diff --git a/src/netif/ppp/mppe.c b/src/netif/ppp/mppe.c
index 1996f809..24e886c1 100644
--- a/src/netif/ppp/mppe.c
+++ b/src/netif/ppp/mppe.c
@@ -202,6 +202,8 @@ mppe_compress(ppp_pcb *pcb, ppp_mppe_state *state, struct pbuf **pb, u16_t proto
 	u8_t *pl;
 	err_t err;
 
+	LWIP_UNUSED_ARG(pcb);
+
 	/* TCP stack requires that we don't change the packet payload, therefore we copy
 	 * the whole packet before encryption.
 	 */