diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
index ad2ab080f344..0b52b1a4e864 100644
--- a/drivers/firmware/arm_scmi/power.c
+++ b/drivers/firmware/arm_scmi/power.c
@@ -178,8 +178,12 @@ static char *scmi_power_name_get(const struct scmi_protocol_handle *ph,
 				 u32 domain)
 {
 	struct scmi_power_info *pi = ph->get_priv(ph);
-	struct power_dom_info *dom = pi->dom_info + domain;
+	struct power_dom_info *dom;
 
+	if (domain >= pi->num_domains)
+		return "unknown";
+
+	dom = pi->dom_info + domain;
 	return dom->name;
 }