diff --git a/gc/network.h b/gc/network.h
index bdd6ed1b..dd2accce 100644
--- a/gc/network.h
+++ b/gc/network.h
@@ -280,7 +280,7 @@ s32 net_init_async(netcallback cb, void *usrdata);
 s32 net_get_status(void);
 void net_wc24cleanup(void);
 #endif
-s32 net_get_mac_address(void *mac_buf);
+s32 net_get_mac_address(u8 mac_buf[6]);
 void net_deinit(void);
 
 u32 net_gethostip(void);
diff --git a/libogc/network_wii.c b/libogc/network_wii.c
index 6bde0b30..f916a58d 100644
--- a/libogc/network_wii.c
+++ b/libogc/network_wii.c
@@ -657,10 +657,10 @@ void net_wc24cleanup(void) {
     }
 }
 
-s32 net_get_mac_address(void *mac_buf) {
+s32 net_get_mac_address(u8 mac_buf[6]) {
 	s32 fd;
 	s32 result;
-	void *_mac_buf;
+	u8 *_mac_buf;
 	STACK_ALIGN(u32, manage_buf, 0x20, 32);
 
 	if (mac_buf==NULL) return -EINVAL;
diff --git a/lwip/network.c b/lwip/network.c
index c89390d5..bcc7c131 100644
--- a/lwip/network.c
+++ b/lwip/network.c
@@ -1612,9 +1612,10 @@ u32 net_gethostip(void)
 	return g_hNetIF.ip_addr.addr;
 }
 
-s32 net_get_mac_address(void *mac_buf)
+s32 net_get_mac_address(u8 mac_buf[6])
 {
 	if(mac_buf==NULL) return -EINVAL;
+	if(g_hNetIF.hwaddr_len!=6) return -ERANGE;
 	memcpy(mac_buf,g_hNetIF.hwaddr,g_hNetIF.hwaddr_len);
 	return 0;
 }