diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 484d322d96..b05816af86 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -521,7 +521,7 @@
 		resets = <&ethsys 0>;
 		reset-names = "mtketh";
 		status = "disabled";
-		ext-devices-prefix = "usb", "wwan","rmnet","eth2","eth3","eth4","eth5";
+		ext-devices-prefix = "usb", "wwan","rmnet","eth2","eth3","eth4","eth1";
 	};
 
 	sgmiisys0: syscon@10060000 {