--- build.xml
+++ build.xml
@@ -219,8 +219,6 @@
 			debug="on"
 			includes="**/*.java"
 			excludes="${excludes},**/bak/**"
-			source="1.6"
-			target="1.6"
 		>
 			<classpath>
 				<fileset refid="lib-fileset"/>