diff --git a/target/linux/ramips/dts/mt7620n_snr_cpe-w4n-mt.dts b/target/linux/ramips/dts/mt7620n_snr_cpe-w4n-mt.dts
index 987869a0f3f..a1a56068429 100644
--- a/target/linux/ramips/dts/mt7620n_snr_cpe-w4n-mt.dts
+++ b/target/linux/ramips/dts/mt7620n_snr_cpe-w4n-mt.dts
@@ -93,7 +93,7 @@
 			factory: partition@40000 {
 				compatible = "nvmem-cells";
 				label = "Factory";
-				reg = <0x40000 0x100000>;
+				reg = <0x40000 0x10000>;
 				#address-cells = <1>;
 				#size-cells = <1>;
 				read-only;