diff --git a/target/linux/ramips/patches-5.10/410-mtd-rawnand-add-driver-support-for-MT7621-nand-flash.patch b/target/linux/ramips/patches-5.10/410-mtd-rawnand-add-driver-support-for-MT7621-nand-flash.patch
index 8049dbde142..3314013420e 100644
--- a/target/linux/ramips/patches-5.10/410-mtd-rawnand-add-driver-support-for-MT7621-nand-flash.patch
+++ b/target/linux/ramips/patches-5.10/410-mtd-rawnand-add-driver-support-for-MT7621-nand-flash.patch
@@ -233,7 +233,7 @@ Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
 +#define   DEC_EL_EVEN_S			0
 +#define   DEC_EL_M			0x1fff
 +#define   DEC_EL_BYTE_POS_S		3
-+#define   DEC_EL_BIT_POS_M		GENMASK(3, 0)
++#define   DEC_EL_BIT_POS_M		GENMASK(2, 0)
 +
 +#define ECC_FDMADDR			0x13c
 +