--- jsr166/build.xml	2013/01/23 07:05:10	1.128
+++ jsr166/build.xml	2013/01/23 07:17:13	1.129
@@ -25,8 +25,10 @@
 ------------------------------------------------------------------------------
   </description>
 
-  <target name="usage" description="Advises user to run with -projecthelp">
-    <echo>Run "ant -projecthelp" for full usage information.</echo>
+  <target name="usage" description="Display main targets by running 'ant -projecthelp'">
+    <java classname="org.apache.tools.ant.Main">
+      <arg value="-projecthelp" />
+    </java>
   </target>