diff --git a/configs/spear300_usbtty_defconfig b/configs/spear300_usbtty_defconfig
index 5ce8720..6827701 100644
--- a/configs/spear300_usbtty_defconfig
+++ b/configs/spear300_usbtty_defconfig
@@ -4,6 +4,7 @@
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_NETDEVICES=y
 CONFIG_ETH_DESIGNWARE=y