diff --git a/target/linux/realtek/dts/rtl8380_zyxel_gs1900-10hp.dts b/target/linux/realtek/dts/rtl8380_zyxel_gs1900-10hp.dts
index 5e9aac0aeff..0ff3aa72a08 100644
--- a/target/linux/realtek/dts/rtl8380_zyxel_gs1900-10hp.dts
+++ b/target/linux/realtek/dts/rtl8380_zyxel_gs1900-10hp.dts
@@ -53,8 +53,8 @@
 };
 
 &mdio {
-	INTERNAL_PHY(24)
-	INTERNAL_PHY(26)
+	INTERNAL_PHY_SDS(24, 4)
+	INTERNAL_PHY_SDS(26, 5)
 };
 
 &switch0 {