diff --git a/include/bl31/services/psci.h b/include/bl31/services/psci.h
index 004dd61..30a53ca 100644
--- a/include/bl31/services/psci.h
+++ b/include/bl31/services/psci.h
@@ -286,9 +286,9 @@
 typedef struct spd_pm_ops {
 	void (*svc_on)(uint64_t target_cpu);
 	int32_t (*svc_off)(uint64_t __unused);
-	void (*svc_suspend)(uint64_t __unused);
+	void (*svc_suspend)(uint64_t max_off_pwrlvl);
 	void (*svc_on_finish)(uint64_t __unused);
-	void (*svc_suspend_finish)(uint64_t suspend_level);
+	void (*svc_suspend_finish)(uint64_t max_off_pwrlvl);
 	int32_t (*svc_migrate)(uint64_t from_cpu, uint64_t to_cpu);
 	int32_t (*svc_migrate_info)(uint64_t *resident_cpu);
 	void (*svc_system_off)(void);