diff --git a/common/event.c b/common/event.c
index dc61b9672f3..16c2ba6cc92 100644
--- a/common/event.c
+++ b/common/event.c
@@ -56,7 +56,10 @@ _Static_assert(ARRAY_SIZE(type_name) == EVT_COUNT, "event type_name size");
 const char *event_type_name(enum event_t type)
 {
 #if CONFIG_IS_ENABLED(EVENT_DEBUG)
-	return type_name[type];
+	if (type < ARRAY_SIZE(type_name))
+		return type_name[type];
+	else
+		return "(unknown)";
 #else
 	return "(unknown)";
 #endif