--- JGroups-2.6.10.merge.src/build.xml	2017-09-19 09:56:25.272837434 +0200
+++ JGroups-2.6.10.merge.src/build.xml	2017-09-19 09:57:04.904838110 +0200
@@ -82,7 +82,6 @@
             depends="prepare"
             description="Compiles are Java files">
         <javac destdir="${compile.dir}"
-               source="1.5"
                classpathref="jg.classpath"
                debug="on"
                deprecation="off"