diff --git a/configs/helios4_defconfig b/configs/helios4_defconfig
index 7d812e8..c2130ba 100644
--- a/configs/helios4_defconfig
+++ b/configs/helios4_defconfig
@@ -63,6 +63,7 @@
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y
 CONFIG_MII=y
+CONFIG_MVMDIO=y
 CONFIG_PCI=y
 CONFIG_PCI_MVEBU=y
 CONFIG_SCSI=y