diff --git a/src/fu-engine.c b/src/fu-engine.c
index 6d462b9b6..59deae25e 100644
--- a/src/fu-engine.c
+++ b/src/fu-engine.c
@@ -6402,7 +6402,7 @@ fu_engine_attrs_calculate_hsi_for_chassis(FuEngine *self)
 		break;
 	}
 
-	return g_strdup_printf("HSI-INVALID:chassis[0x%02x]", val);
+	return g_strdup_printf("HSI:INVALID:chassis[0x%02x]", val);
 }
 
 static gboolean