diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
index 4186699ff9..208ce5ccc4 100644
--- a/drivers/net/rtl8139.c
+++ b/drivers/net/rtl8139.c
@@ -188,7 +188,7 @@ static int rtl_transmit(struct eth_device *dev, void *packet, int length);
 static int rtl_poll(struct eth_device *dev);
 static void rtl_disable(struct eth_device *dev);
 #ifdef CONFIG_MCAST_TFTP/*  This driver already accepts all b/mcast */
-static int rtl_bcast_addr (struct eth_device *dev, u8 bcast_mac, u8 set)
+static int rtl_bcast_addr(struct eth_device *dev, const u8 *bcast_mac, u8 set)
 {
 	return (0);
 }
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index f5e314b9ee..3428dd0cf9 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -120,14 +120,14 @@ static void tsec_configure_serdes(struct tsec_private *priv)
  * for PowerPC (tm) is usually the case) in the tregister holds
  * the entry. */
 static int
-tsec_mcast_addr (struct eth_device *dev, u8 mcast_mac, u8 set)
+tsec_mcast_addr(struct eth_device *dev, const u8 *mcast_mac, u8 set)
 {
 	struct tsec_private *priv = privlist[1];
 	volatile tsec_t *regs = priv->regs;
 	volatile u32  *reg_array, value;
 	u8 result, whichbit, whichreg;
 
-	result = (u8)((ether_crc(MAC_ADDR_LEN,mcast_mac) >> 24) & 0xff);
+	result = (u8)((ether_crc(MAC_ADDR_LEN, mcast_mac) >> 24) & 0xff);
 	whichbit = result & 0x1f;	/* the 5 LSB = which bit to set */
 	whichreg = result >> 5;		/* the 3 MSB = which reg to set it in */
 	value = (1 << (31-whichbit));
diff --git a/include/net.h b/include/net.h
index 5aedc17aa6..0802fad876 100644
--- a/include/net.h
+++ b/include/net.h
@@ -89,7 +89,7 @@ struct eth_device {
 	int  (*recv) (struct eth_device *);
 	void (*halt) (struct eth_device *);
 #ifdef CONFIG_MCAST_TFTP
-	int (*mcast) (struct eth_device *, u32 ip, u8 set);
+	int (*mcast) (struct eth_device *, const u8 *enetaddr, u8 set);
 #endif
 	int  (*write_hwaddr) (struct eth_device *);
 	struct eth_device *next;