diff --git a/.classpath b/.classpath
index 70e055e..1e89dcb 100644
--- a/.classpath
+++ b/.classpath
@@ -9,7 +9,7 @@
 	<classpathentry kind="lib" path="lib/log4j-1.2.17.jar"/>
 	<classpathentry kind="lib" path="lib/slf4j-api-1.7.5.jar"/>
 	<classpathentry kind="lib" path="lib/slf4j-log4j12-1.7.5.jar"/>
-	<classpathentry kind="lib" path="lib/commons-lang3-3.1.jar"/>
+	<classpathentry kind="lib" path="lib/commons-lang3-3.1.jar" sourcepath="lib/commons-lang3-3.1-sources.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v7.0">
 		<attributes>
 			<attribute name="owner.project.facets" value="jst.utility"/>