diff --git a/config/checkstyle/checkstyle-test.xml b/config/checkstyle/checkstyle-test.xml
index 81b48ec..503f6e0 100644
--- a/config/checkstyle/checkstyle-test.xml
+++ b/config/checkstyle/checkstyle-test.xml
@@ -1,4 +1,18 @@
 <?xml version="1.0"?>
+<!--
+  ~ jndn-mock
+  ~ Copyright (c) 2016, Intel Corporation.
+  ~
+  ~ This program is free software; you can redistribute it and/or modify it
+  ~ under the terms and conditions of the GNU Lesser General Public License,
+  ~ version 3, as published by the Free Software Foundation.
+  ~
+  ~ This program is distributed in the hope it will be useful, but WITHOUT ANY
+  ~ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+  ~ FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+  ~ more details.
+  -->
+
 <!DOCTYPE module PUBLIC
           "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
           "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index 86eda33..9fb4286 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -1,4 +1,18 @@
 <?xml version="1.0"?>
+<!--
+  ~ jndn-mock
+  ~ Copyright (c) 2016, Intel Corporation.
+  ~
+  ~ This program is free software; you can redistribute it and/or modify it
+  ~ under the terms and conditions of the GNU Lesser General Public License,
+  ~ version 3, as published by the Free Software Foundation.
+  ~
+  ~ This program is distributed in the hope it will be useful, but WITHOUT ANY
+  ~ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+  ~ FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+  ~ more details.
+  -->
+
 <!DOCTYPE module PUBLIC
           "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
           "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">