diff --git a/target/linux/ath79/dts/ar7241_ubnt_unifi.dts b/target/linux/ath79/dts/ar7241_ubnt_unifi.dts
index c4c0235f7b..ce59463d9e 100644
--- a/target/linux/ath79/dts/ar7241_ubnt_unifi.dts
+++ b/target/linux/ath79/dts/ar7241_ubnt_unifi.dts
@@ -80,6 +80,7 @@
 			partition@40000 {
 				label = "u-boot-env";
 				reg = <0x040000 0x010000>;
+				read-only;
 			};
 
 			partition@50000 {