diff --git a/lib/dns/tests/testdata/diff/zone1.data b/lib/dns/tests/testdata/diff/zone1.data
index ed4842ee04..ae936477b6 100644
--- a/lib/dns/tests/testdata/diff/zone1.data
+++ b/lib/dns/tests/testdata/diff/zone1.data
@@ -1,3 +1,19 @@
+; Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+; $Id: zone1.data,v 1.3 2011/12/06 23:46:31 tbox Exp $
+
 @ 	0	SOA . . 0 0 0 0 0
 @	0	NS @
 @	0	A 1.2.3.4
diff --git a/lib/dns/tests/testdata/diff/zone2.data b/lib/dns/tests/testdata/diff/zone2.data
index 8349d606e3..628a2da250 100644
--- a/lib/dns/tests/testdata/diff/zone2.data
+++ b/lib/dns/tests/testdata/diff/zone2.data
@@ -1,3 +1,19 @@
+; Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+; $Id: zone2.data,v 1.3 2011/12/06 23:46:32 tbox Exp $
+
 @ 	0	SOA . . 0 0 0 0 0
 @	0	NS @
 @	0	A 1.2.3.4
diff --git a/lib/dns/tests/testdata/diff/zone3.data b/lib/dns/tests/testdata/diff/zone3.data
index 8ed7a4b3f7..08ff200b35 100644
--- a/lib/dns/tests/testdata/diff/zone3.data
+++ b/lib/dns/tests/testdata/diff/zone3.data
@@ -1,3 +1,19 @@
+; Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+; $Id: zone3.data,v 1.3 2011/12/06 23:46:32 tbox Exp $
+
 @ 	0	SOA . . 0 0 0 0 0
 @	0	NS @
 @	0	A 1.2.3.4