diff --git a/include/bl31/services/psci.h b/include/bl31/services/psci.h
index c9b3f8d..f6fd487 100644
--- a/include/bl31/services/psci.h
+++ b/include/bl31/services/psci.h
@@ -165,6 +165,7 @@
 #define PSCI_E_INTERN_FAIL	-6
 #define PSCI_E_NOT_PRESENT	-7
 #define PSCI_E_DISABLED		-8
+#define PSCI_E_INVALID_ADDRESS	-9
 
 #define PSCI_INVALID_MPIDR	~(0ULL)