diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index b85ab4a..d9bb51b 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1228,7 +1228,10 @@
 		return;
 	}
 
-	/* phy config for RTL8169s mac_version C chip */
+	if ((tp->mac_version != RTL_GIGA_MAC_VER_02) &&
+	    (tp->mac_version != RTL_GIGA_MAC_VER_03))
+		return;
+
 	mdio_write(ioaddr, 31, 0x0001);			//w 31 2 0 1
 	mdio_write(ioaddr, 21, 0x1000);			//w 21 15 0 1000
 	mdio_write(ioaddr, 24, 0x65c7);			//w 24 15 0 65c7