diff --git a/arch/powerpc/boot/dts/mpc8572ds.dts b/arch/powerpc/boot/dts/mpc8572ds.dts
index 3dcc001b8ed3432609a281462af94293f7f47868..359c3b727420fec88a5f2585744b0f3b6c923f5e 100644
--- a/arch/powerpc/boot/dts/mpc8572ds.dts
+++ b/arch/powerpc/boot/dts/mpc8572ds.dts
@@ -89,7 +89,7 @@
 
 			ramdisk@0 {
 				reg = <0x0 0x03000000>;
-				readl-only;
+				read-only;
 			};
 
 			diagnostic@3000000 {