diff --git a/tools/build/conf/src/main/resources/onos/checkstyle.xml b/tools/build/conf/src/main/resources/onos/checkstyle.xml
index dad602d..2908c89 100644
--- a/tools/build/conf/src/main/resources/onos/checkstyle.xml
+++ b/tools/build/conf/src/main/resources/onos/checkstyle.xml
@@ -1,4 +1,19 @@
 <?xml version="1.0"?>
+<!--
+  ~ Copyright 2014 Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
 <!DOCTYPE module PUBLIC
         "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
         "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
diff --git a/tools/build/conf/src/main/resources/onos/pmd.xml b/tools/build/conf/src/main/resources/onos/pmd.xml
index 7c862a3..68d0b21 100644
--- a/tools/build/conf/src/main/resources/onos/pmd.xml
+++ b/tools/build/conf/src/main/resources/onos/pmd.xml
@@ -1,4 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2014 Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
 <ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     name="ONOS Rules"
     xmlns="http://pmd.sf.net/ruleset/1.0.0"
diff --git a/tools/build/conf/src/main/resources/onos/suppressions.xml b/tools/build/conf/src/main/resources/onos/suppressions.xml
index 178866c..a71d941 100644
--- a/tools/build/conf/src/main/resources/onos/suppressions.xml
+++ b/tools/build/conf/src/main/resources/onos/suppressions.xml
@@ -1,4 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2014 Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
 <!DOCTYPE suppressions PUBLIC "-//Puppy Crawl//DTD Suppressions 1.1//EN" "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 
 <suppressions>