diff --git a/configs/MPC8555CDS_legacy_defconfig b/configs/MPC8555CDS_legacy_defconfig
index d09370e..485e987 100644
--- a/configs/MPC8555CDS_legacy_defconfig
+++ b/configs/MPC8555CDS_legacy_defconfig
@@ -6,6 +6,7 @@
 CONFIG_SYS_EXTRA_OPTIONS="LEGACY"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y