diff --git a/bin/tests/system/dnstap/ydump.py b/bin/tests/system/dnstap/ydump.py
index 1ce4783f4d..e3b6140b52 100644
--- a/bin/tests/system/dnstap/ydump.py
+++ b/bin/tests/system/dnstap/ydump.py
@@ -1,4 +1,11 @@
 #!/usr/bin/python
+############################################################################
+# Copyright (C) 2016  Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+############################################################################
 
 try:
     import yaml