diff --git a/target/linux/mediatek/dts/mt7981b-openwrt-one.dts b/target/linux/mediatek/dts/mt7981b-openwrt-one.dts
index 2193c782b5f..cfc5319d914 100644
--- a/target/linux/mediatek/dts/mt7981b-openwrt-one.dts
+++ b/target/linux/mediatek/dts/mt7981b-openwrt-one.dts
@@ -329,7 +329,7 @@
 
 			partition@580000 {
 				label = "ubi";
-				reg = <0x100000 0x7F00000>;
+				reg = <0x100000 0xFF00000>;
 				compatible = "linux,ubi";
 
 				volumes {