diff --git a/target/linux/mediatek/dts/mt7981b-cmcc-rax3000m-nand-ubootmod.dts b/target/linux/mediatek/dts/mt7981b-cmcc-rax3000m-nand-ubootmod.dts
index e515658aa4..681401bd74 100644
--- a/target/linux/mediatek/dts/mt7981b-cmcc-rax3000m-nand-ubootmod.dts
+++ b/target/linux/mediatek/dts/mt7981b-cmcc-rax3000m-nand-ubootmod.dts
@@ -178,13 +178,13 @@
 			label = "lan3";
 		};
 
-		port@2 {
-			reg = <2>;
+		port@1 {
+			reg = <1>;
 			label = "lan2";
 		};
 
-		port@3 {
-			reg = <3>;
+		port@2 {
+			reg = <2>;
 			label = "lan1";
 		};