--- /dev/null
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+ "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
+ "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+
+<!--
+ Checkstyle configuration that checks the license headers
+ expected by Open-O.
+ -->
+
+<module name = "Checker">
+ <property name="charset" value="UTF-8"/>
+ <property name="severity" value="error"/>
+
+ <module name="RegexpHeader">
+ <property name="headerFile" value="${checkstyle.header.file}"/>
+ <property name="multiLines" value="2"/>
+ </module>
+</module>