diff --git a/BaS_gcc/net/bootp.c b/BaS_gcc/net/bootp.c
index 45a8245..fcd70fa 100644
--- a/BaS_gcc/net/bootp.c
+++ b/BaS_gcc/net/bootp.c
@@ -18,101 +18,101 @@
 #define dbg(format, arg...) do { ; } while (0)
 #endif /* DBG_BOOTP */
 
-#define TIMER_NETWORK 3			/* defines GPT3 as timer for this function */
+#define TIMER_NETWORK 3         /* defines GPT3 as timer for this function */
 
 static struct bootp_connection connection;
-#define XID			0x1234		/* this is arbitrary */
-#define	MAX_TRIES	5			/* since UDP can fail */
+#define XID         0x1234      /* this is arbitrary */
+#define MAX_TRIES   5           /* since UDP can fail */
 
 void bootp_request(NIF *nif, uint8_t *pa)
 {
-	/*
-	 * This function broadcasts a BOOTP request for the protocol
-	 * address "pa"
-	 */
-	uint8_t *addr;
-	IP_ADDR broadcast = {255, 255, 255, 255};
-	NBUF *nbuf;
-	struct bootp_packet *p;
-	int i, result;
+    /*
+     * This function broadcasts a BOOTP request for the protocol
+     * address "pa"
+     */
+    uint8_t *addr;
+    IP_ADDR broadcast = {255, 255, 255, 255};
+    NBUF *nbuf;
+    struct bootp_packet *p;
+    int i, result;
 
-	nbuf = nbuf_alloc();
-	if (nbuf == NULL)
-	{
-		xprintf("%s: couldn't allocate Tx buffer\r\n", __FUNCTION__);
-		return;
-	}
+    nbuf = nbuf_alloc();
+    if (nbuf == NULL)
+    {
+        xprintf("%s: couldn't allocate Tx buffer\r\n", __FUNCTION__);
+        return;
+    }
 
-	p = (struct bootp_packet *) &nbuf->data[BOOTP_HDR_OFFSET];
+    p = (struct bootp_packet *) &nbuf->data[BOOTP_HDR_OFFSET];
 
-	/* Build the BOOTP request packet */
-	p->type = BOOTP_TYPE_BOOTREQUEST;
-	p->htype = BOOTP_HTYPE_ETHERNET;
-	p->hlen = BOOTP_HLEN_ETHERNET;
-	p->hops = 0;
-	p->xid = XID;
-	p->secs = 1;
-	p->flags = BOOTP_FLAGS_BROADCAST;
-	p->cl_addr = 0x0;
-	p->yi_addr = 0x0;
-	p->gi_addr = 0x0;
+    /* Build the BOOTP request packet */
+    p->type = BOOTP_TYPE_BOOTREQUEST;
+    p->htype = BOOTP_HTYPE_ETHERNET;
+    p->hlen = BOOTP_HLEN_ETHERNET;
+    p->hops = 0;
+    p->xid = XID;
+    p->secs = 1;
+    p->flags = BOOTP_FLAGS_BROADCAST;
+    p->cl_addr = 0x0;
+    p->yi_addr = 0x0;
+    p->gi_addr = 0x0;
 
-	connection.nif = nif;
-	addr = &nif->hwa[0];
+    connection.nif = nif;
+    addr = &nif->hwa[0];
 
-	for (i = 0; i < 6; i++)
-		p->ch_addr[i] = addr[i];
+    for (i = 0; i < 6; i++)
+        p->ch_addr[i] = addr[i];
 
-	nbuf->length = BOOTP_PACKET_LEN;
+    nbuf->length = BOOTP_PACKET_LEN;
 
-	/* setup reply handler */
-	udp_bind_port(BOOTP_CLIENT_PORT, bootp_handler);
+    /* setup reply handler */
+    udp_bind_port(BOOTP_CLIENT_PORT, bootp_handler);
 
-	for (i = 0; i < MAX_TRIES; i++)
-	{
-		/* Send the BOOTP request */
-		result = udp_send(connection.nif, broadcast, BOOTP_CLIENT_PORT,
-							BOOTP_SERVER_PORT, nbuf);
-		dbg("sent bootp request\r\n");
-		if (result == true)
-			break;
-	}
+    for (i = 0; i < MAX_TRIES; i++)
+    {
+        /* Send the BOOTP request */
+        result = udp_send(connection.nif, broadcast, BOOTP_CLIENT_PORT,
+                            BOOTP_SERVER_PORT, nbuf);
+        dbg("sent bootp request\r\n");
+        if (result == true)
+            break;
+    }
 
-	/* release handler */
-	udp_free_port(BOOTP_CLIENT_PORT);
+    /* release handler */
+    udp_free_port(BOOTP_CLIENT_PORT);
 
-	if (result == 0)
-		nbuf_free(nbuf);
+    if (result == 0)
+        nbuf_free(nbuf);
 }
 
 void bootp_handler(NIF *nif, NBUF *nbuf)
 {
-	/* 
-	 * BOOTP protocol handler 
-	 */
-	uint8_t *addr;
-	struct bootp_packet *rx_p;
-	udp_frame_hdr *udpframe;
+    /* 
+     * BOOTP protocol handler 
+     */
+    struct bootp_packet *rx_p;
+    udp_frame_hdr *udpframe;
 
+    (void) udpframe;    /* FIXME: just to avoid compiler warning */
     dbg("\r\n");
 
-	rx_p = (struct bootp_packet *) &nbuf->data[nbuf->offset];
-	udpframe = (udp_frame_hdr *) &nbuf->data[nbuf->offset - UDP_HDR_SIZE];
+    rx_p = (struct bootp_packet *) &nbuf->data[nbuf->offset];
+    udpframe = (udp_frame_hdr *) &nbuf->data[nbuf->offset - UDP_HDR_SIZE];
 
     /*
      * check packet if it is valid and if it is really intended for us
      */
 
-	if (rx_p->type == BOOTP_TYPE_BOOTREPLY && rx_p->xid == XID)
-	{
-		dbg("received bootp reply\r\n");
-		/* seems to be valid */
-	
-	}
-	else
-	{
+    if (rx_p->type == BOOTP_TYPE_BOOTREPLY && rx_p->xid == XID)
+    {
+        dbg("received bootp reply\r\n");
+        /* seems to be valid */
+    
+    }
+    else
+    {
         dbg("received invalid bootp reply\r\n");
-		/* not valid */
-		return;
-	}
+        /* not valid */
+        return;
+    }
 }