Index: trunk/build.xml
===================================================================
--- trunk/build.xml	(revision 397)
+++ trunk/build.xml	(revision 407)
@@ -31,4 +31,5 @@
 
 		<!-- create josm-custom.jar -->
+		<delete file="dist/josm-custom.jar"/>
 		<jar destfile="dist/josm-custom.jar" basedir="build">
 			<manifest>