diff --git a/fdts/fvp-base-psci-common.dtsi b/fdts/fvp-base-psci-common.dtsi
index d75c007..6018f0c 100644
--- a/fdts/fvp-base-psci-common.dtsi
+++ b/fdts/fvp-base-psci-common.dtsi
@@ -107,7 +107,7 @@
 		CPU_MAP
 
 		idle-states {
-			entry-method = "arm,psci";
+			entry-method = "psci";
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";