diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index a37bb20..a35f2f2 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1421,7 +1421,7 @@
 
 	/* Handle TCP checksum offload */
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		unsigned offset = skb->h.raw - skb->data;
+		const unsigned offset = skb_transport_offset(skb);
 		u32 tcpsum;
 
 		tcpsum = offset << 16;		/* sum start */