diff --git a/target/linux/ramips/dts/DIR-620-D1.dts b/target/linux/ramips/dts/DIR-620-D1.dts
index 8913e268f9..d2650330cc 100644
--- a/target/linux/ramips/dts/DIR-620-D1.dts
+++ b/target/linux/ramips/dts/DIR-620-D1.dts
@@ -48,7 +48,7 @@
 
 		partition@50000 {
 			label = "firmware";
-			reg = <0x50000 0x3b0000>;
+			reg = <0x50000 0x7b0000>;
 		};
 			};
 		};