diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index 4b9ec39..ed6344c 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -223,6 +223,7 @@
 	char rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
 
 	u32 interface;
+	u32 max_speed;
 	u32 tx_currdescnum;
 	u32 rx_currdescnum;