diff --git a/kyaml/yaml/kfns_test.go b/kyaml/yaml/kfns_test.go
index 7b0e0cb8f..fe7d63573 100644
--- a/kyaml/yaml/kfns_test.go
+++ b/kyaml/yaml/kfns_test.go
@@ -1,3 +1,6 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package yaml
 
 import (