diff --git a/src/apps/netbiosns/netbiosns.c b/src/apps/netbiosns/netbiosns.c
index 6ab51d4b..5048a32f 100644
--- a/src/apps/netbiosns/netbiosns.c
+++ b/src/apps/netbiosns/netbiosns.c
@@ -253,7 +253,7 @@ netbiosns_recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t
   if (p != NULL) {
     char   netbios_name[NETBIOS_NAME_LEN+1];
     struct netbios_hdr*      netbios_hdr      = (struct netbios_hdr*)p->payload;
-    struct netbios_name_hdr* netbios_name_hdr = (struct netbios_name_hdr*)(void*)(netbios_hdr+1);
+    struct netbios_name_hdr* netbios_name_hdr = (struct netbios_name_hdr*)(netbios_hdr+1);
 
     /* we only answer if we got a default interface */
     if (netif_default != NULL) {
diff --git a/src/netif/etharp.c b/src/netif/etharp.c
index b14673e2..9057aea0 100644
--- a/src/netif/etharp.c
+++ b/src/netif/etharp.c
@@ -747,7 +747,7 @@ etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr, struct pbuf *p)
   }
 
   ethhdr = (struct eth_hdr *)p->payload;
-  hdr = (struct etharp_hdr *)(void*)((u8_t*)ethhdr + SIZEOF_ETH_HDR);
+  hdr = (struct etharp_hdr *)((u8_t*)ethhdr + SIZEOF_ETH_HDR);
 #if ETHARP_SUPPORT_VLAN
   if (ethhdr->type == PP_HTONS(ETHTYPE_VLAN)) {
     hdr = (struct etharp_hdr *)(((u8_t*)ethhdr) + SIZEOF_ETH_HDR + SIZEOF_VLAN_HDR);
@@ -1279,10 +1279,10 @@ etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,
 
   ethhdr = (struct eth_hdr *)p->payload;
 #if ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET)
-  vlanhdr = (struct eth_vlan_hdr*)(void*)(((u8_t*)ethhdr) + SIZEOF_ETH_HDR);
-  hdr = (struct etharp_hdr *)(void*)((u8_t*)ethhdr + SIZEOF_ETH_HDR + SIZEOF_VLAN_HDR);
+  vlanhdr = (struct eth_vlan_hdr*)(((u8_t*)ethhdr) + SIZEOF_ETH_HDR);
+  hdr = (struct etharp_hdr *)((u8_t*)ethhdr + SIZEOF_ETH_HDR + SIZEOF_VLAN_HDR);
 #else /* ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET) */
-  hdr = (struct etharp_hdr *)(void*)((u8_t*)ethhdr + SIZEOF_ETH_HDR);
+  hdr = (struct etharp_hdr *)((u8_t*)ethhdr + SIZEOF_ETH_HDR);
 #endif /* ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET) */
   LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_raw: sending raw ARP packet.\n"));
   hdr->opcode = htons(opcode);