Index: build.xml
===================================================================
--- build.xml	(revision 1496923)
+++ build.xml	(working copy)
@@ -1204,6 +1204,7 @@
         <jvmarg value="${test.jvmarg.egd}"/>
         <jvmarg value="-Djava.library.path=${test.apr.loc}"/>
         <jvmarg value="${test.formatter}"/>
+        <jvmarg value="-Djava.awt.headless=true"/>
 
         <classpath refid="tomcat.test.classpath" />