diff --git a/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts b/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
index 5918e611dd..57cefee819 100644
--- a/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
+++ b/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
@@ -11,6 +11,7 @@
 	compatible = "tplink,tl-mr3040-v2", "qca,ar9331";
 
 	aliases {
+		serial0 = &uart;
 		led-boot = &led_lan;
 		led-failsafe = &led_lan;
 		label-mac-device = &eth0;