diff --git a/include/configs/espt.h b/include/configs/espt.h
index 3df1fae..f61e2d8 100644
--- a/include/configs/espt.h
+++ b/include/configs/espt.h
@@ -124,5 +124,6 @@
 #define CONFIG_PHYLIB
 #define CONFIG_BITBANGMII
 #define CONFIG_BITBANGMII_MULTI
+#define CONFIG_SH_ETHER_PHY_MODE PHY_INTERFACE_MODE_MII
 
 #endif /* __SH7763RDP_H */