diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index b297a67..b2861e0 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -396,7 +396,7 @@
 		if (unlikely(!skb))
 			break;
 
-		dma = pci_map_single(mac->dma_pdev, skb->data, skb->len,
+		dma = pci_map_single(mac->dma_pdev, skb->data, BUF_SIZE,
 				     PCI_DMA_FROMDEVICE);
 
 		if (unlikely(dma_mapping_error(dma))) {