diff --git a/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t.dts b/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t.dts
index cc0d44fdf5d..d4b11cbe048 100644
--- a/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t.dts
+++ b/target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t.dts
@@ -12,6 +12,7 @@
 	mediatek,nmbm;
 	mediatek,bmt-max-ratio = <1>;
 	mediatek,bmt-max-reserved-blocks = <64>;
+	mediatek,bmt-mtd-overridden-oobsize = <64>;
 };
 
 &partitions {