diff --git a/configs/socfpga_is1_defconfig b/configs/socfpga_is1_defconfig
index 2dd44b5..3c69276 100644
--- a/configs/socfpga_is1_defconfig
+++ b/configs/socfpga_is1_defconfig
@@ -54,6 +54,7 @@
 CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_DM_ETH=y
 CONFIG_ETH_DESIGNWARE=y
+CONFIG_MII=y
 CONFIG_DM_RESET=y
 CONFIG_SPI=y
 CONFIG_CADENCE_QSPI=y