diff --git a/tools/dts/odroidc2.dts b/tools/dts/odroidc2.dts
index 0835335dba..4a4174be18 100644
--- a/tools/dts/odroidc2.dts
+++ b/tools/dts/odroidc2.dts
@@ -33,7 +33,7 @@
 		};
 
 		secmon@5000000 {
-			reg = < 0x00 0x5000000 0x00 0x300000 >;
+			reg = < 0x00 0x5000000 0x00 0x2300000 >;
 			no-map;
 		};