diff --git a/drivers/net/ethernet/i825xx/znet.c b/drivers/net/ethernet/i825xx/znet.c
index ba4e0cea3506f80da5cc36a69f22994a7a3e470e..c9479e081b8aa0507a980d6bb1bc11af1d1adbc0 100644
--- a/drivers/net/ethernet/i825xx/znet.c
+++ b/drivers/net/ethernet/i825xx/znet.c
@@ -865,14 +865,14 @@ static void hardware_init(struct net_device *dev)
 	disable_dma(znet->rx_dma); 		/* reset by an interrupting task. */
 	clear_dma_ff(znet->rx_dma);
 	set_dma_mode(znet->rx_dma, DMA_RX_MODE);
-	set_dma_addr(znet->rx_dma, (unsigned int) znet->rx_start);
+	set_dma_addr(znet->rx_dma, isa_virt_to_bus(znet->rx_start));
 	set_dma_count(znet->rx_dma, RX_BUF_SIZE);
 	enable_dma(znet->rx_dma);
 	/* Now set up the Tx channel. */
 	disable_dma(znet->tx_dma);
 	clear_dma_ff(znet->tx_dma);
 	set_dma_mode(znet->tx_dma, DMA_TX_MODE);
-	set_dma_addr(znet->tx_dma, (unsigned int) znet->tx_start);
+	set_dma_addr(znet->tx_dma, isa_virt_to_bus(znet->tx_start));
 	set_dma_count(znet->tx_dma, znet->tx_buf_len<<1);
 	enable_dma(znet->tx_dma);
 	release_dma_lock(flags);