diff --git a/dts/common/nordic/nrf52840_partition.dtsi b/dts/common/nordic/nrf52840_partition.dtsi
index 1f6894e07f6..1fa90a3ed71 100644
--- a/dts/common/nordic/nrf52840_partition.dtsi
+++ b/dts/common/nordic/nrf52840_partition.dtsi
@@ -25,12 +25,12 @@
 
 		slot0_partition: partition@c000 {
 			label = "image-0";
-			reg = <0x0000C000 0x00077000>;
+			reg = <0x0000C000 0x00076000>;
 		};
 
-		slot1_partition: partition@83000 {
+		slot1_partition: partition@82000 {
 			label = "image-1";
-			reg = <0x00083000 0x00075000>;
+			reg = <0x00082000 0x00076000>;
 		};
 
 		/*