diff --git a/net/bootp.c b/net/bootp.c
index b907351..8c56c08 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -330,7 +330,7 @@
 
 	/* Retrieve extended information (we must parse the vendor area) */
 	if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
-		BootpVendorProcess(&bp->bp_vend[4], len);
+		BootpVendorProcess((uchar *)&bp->bp_vend[4], len);
 
 	NetSetTimeout(0, (thand_f *)0);
 
@@ -387,7 +387,7 @@
 	u8 *x;
 #endif
 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
-	uchar *hostname;
+	char *hostname;
 #endif
 
 	*e++ = 99;		/* RFC1048 Magic Cookie */
@@ -578,7 +578,7 @@
 	unsigned char bi_enetaddr[6];
 	int   reg;
 	char  *e,*s;
-	uchar tmp[64];
+	char tmp[64];
 	ulong tst1, tst2, sum, m_mask, m_value = 0;
 
 	if (BootpTry ==0) {
@@ -679,9 +679,9 @@
 
 	/* Request additional information from the BOOTP/DHCP server */
 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
-	ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0);
+	ext_len = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0);
 #else
-	ext_len = BootpExtended(bp->bp_vend);
+	ext_len = BootpExtended((u8 *)bp->bp_vend);
 #endif	/* CFG_CMD_DHCP */
 
 	/*
@@ -836,7 +836,7 @@
 	 * Copy options from OFFER packet if present
 	 */
 	NetCopyIP(&OfferedIP, &bp->bp_yiaddr);
-	extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
+	extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
 
 	pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen;
 	iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
@@ -882,7 +882,7 @@
 			dhcp_state = REQUESTING;
 
 			if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
-				DhcpOptionsProcess(&bp->bp_vend[4]);
+				DhcpOptionsProcess((u8 *)&bp->bp_vend[4]);
 
 			BootpCopyNetParams(bp); /* Store net params from reply */
 
@@ -897,11 +897,11 @@
 	case REQUESTING:
 		debug ("DHCP State: REQUESTING\n");
 
-		if ( DhcpMessageType(bp->bp_vend) == DHCP_ACK ) {
+		if ( DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK ) {
 			char *s;
 
 			if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
-				DhcpOptionsProcess(&bp->bp_vend[4]);
+				DhcpOptionsProcess((u8 *)&bp->bp_vend[4]);
 			BootpCopyNetParams(bp); /* Store net params from reply */
 			dhcp_state = BOUND;
 			puts ("DHCP client bound to address ");
diff --git a/net/eth.c b/net/eth.c
index fe1edd1..cfab0e1 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -109,7 +109,7 @@
 
 int eth_initialize(bd_t *bis)
 {
-	unsigned char enetvar[32], env_enetaddr[6];
+	char enetvar[32], env_enetaddr[6];
 	int i, eth_number = 0;
 	char *tmp, *end;
 
diff --git a/net/net.c b/net/net.c
index 11b7700..d1a15e2 100644
--- a/net/net.c
+++ b/net/net.c
@@ -810,6 +810,7 @@
 	int     odd;
 	ulong   result = 0;
 	ushort  leftover;
+	ushort *p;
 
 	if (len > 0) {
 		odd = 1 & (ulong)buff;
@@ -819,7 +820,9 @@
 			buff++;
 		}
 		while (len > 1) {
-			result += *((const ushort *)buff)++;
+			p = (ushort *)buff;
+			result += *p++;
+			buff = (uchar *)p;
 			if (result & 0x80000000)
 				result = (result & 0xFFFF) + (result >> 16);
 			len -= 2;
@@ -1655,7 +1658,7 @@
 	ip->ip_sum   = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
 }
 
-void copy_filename (uchar *dst, uchar *src, int size)
+void copy_filename (char *dst, char *src, int size)
 {
 	if (*src && (*src == '"')) {
 		++src;
diff --git a/net/tftp.c b/net/tftp.c
index 748628c..bcf928d 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -78,7 +78,7 @@
 	}
 
 	if (rc) { /* Flash is destination for this packet */
-		rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
+		rc = flash_write ((char *)src, (ulong)(load_addr+offset), len);
 		if (rc) {
 			flash_perror (rc);
 			NetState = NETLOOP_FAIL;