diff --git a/src/include/netif/etharp.h b/src/include/netif/etharp.h
index 0d50a595..5dfa976b 100644
--- a/src/include/netif/etharp.h
+++ b/src/include/netif/etharp.h
@@ -150,13 +150,13 @@ PACK_STRUCT_END
 /** MEMCPY-like macro to copy to/from struct eth_addr's that are local variables
  * or known to be 32-bit aligned within the protocol header. */
 #ifndef ETHADDR32_COPY
-#define ETHADDR32_COPY(src, dst)  SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
+#define ETHADDR32_COPY(dst, src)  SMEMCPY(dst, src, ETHARP_HWADDR_LEN)
 #endif
 
 /** MEMCPY-like macro to copy to/from struct eth_addr's that are no local
  * variables and known to be 16-bit aligned within the protocol header. */
 #ifndef ETHADDR16_COPY
-#define ETHADDR16_COPY(src, dst)  SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
+#define ETHADDR16_COPY(dst, src)  SMEMCPY(dst, src, ETHARP_HWADDR_LEN)
 #endif
 
 #if LWIP_ARP /* don't build if not configured for use in lwipopts.h */