diff --git a/target/linux/ramips/dts/ArcherMR200.dts b/target/linux/ramips/dts/ArcherMR200.dts
index 0ff2f61d42..93e8cf8804 100644
--- a/target/linux/ramips/dts/ArcherMR200.dts
+++ b/target/linux/ramips/dts/ArcherMR200.dts
@@ -171,9 +171,8 @@
 };
 
 &ethernet {
-		mtd-mac-address = <&rom 0xf100>;
-		mediatek,portmap = "llll";
-	};
+	mtd-mac-address = <&rom 0xf100>;
+};
 
 &ehci {
 	status = "okay";