diff --git a/lib/psci/psci_private.h b/lib/psci/psci_private.h
index b9987fe..04f93bd 100644
--- a/lib/psci/psci_private.h
+++ b/lib/psci/psci_private.h
@@ -298,6 +298,8 @@
 #endif
 void psci_get_target_local_pwr_states(unsigned int end_pwrlvl,
 				      psci_power_state_t *target_state);
+void psci_set_target_local_pwr_states(unsigned int end_pwrlvl,
+				      const psci_power_state_t *target_state);
 int psci_validate_entry_point(entry_point_info_t *ep,
 			uintptr_t entrypoint, u_register_t context_id);
 void psci_get_parent_pwr_domain_nodes(unsigned int cpu_idx,