diff --git a/issue-1_test.go b/issue-1_test.go
index 931d4c26f6552583e0b089d6810bf4c42a516c74..aeaac728547d33a70660c953649cc25cd2ae9c7d 100644
--- a/issue-1_test.go
+++ b/issue-1_test.go
@@ -1,3 +1,6 @@
+// Copyright 2022 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package xflags
 
 import (