diff --git a/src/cpu/x86/smm/smm_module_handler.c b/src/cpu/x86/smm/smm_module_handler.c
index 899ee2f675..d25b5f47cf 100644
--- a/src/cpu/x86/smm/smm_module_handler.c
+++ b/src/cpu/x86/smm/smm_module_handler.c
@@ -106,7 +106,7 @@ struct global_nvs *gnvs;
 
 void *smm_get_save_state(int cpu)
 {
-	if (cpu > smm_runtime.num_cpus)
+	if (cpu >= smm_runtime.num_cpus)
 		return NULL;
 
 	return (void *)(smm_runtime.save_state_top[cpu] -