--- a/nashorn/make/build-nasgen.xml	Wed Jul 05 20:10:08 2017 +0200
+++ b/nashorn/make/build-nasgen.xml	Fri Dec 05 14:35:00 2014 +0530
@@ -39,7 +39,7 @@
                 <pathelement location="${dist.dir}/nasgen.jar"/>
                 <pathelement path="${build.dir}/classes"/>
             </classpath>
-            <jvmarg value="-Djava.ext.dirs="/>
+            <jvmarg value="${boot.class.path}"/>
             <arg value="${build.dir}/classes"/>
             <arg value="jdk.nashorn.internal.objects"/>
             <arg value="${build.dir}/classes"/>