Index: utils/josm/plugins/mappaint/build.xml
===================================================================
--- utils/josm/plugins/mappaint/build.xml	(revision 1437)
+++ utils/josm/plugins/mappaint/build.xml	(revision 1438)
@@ -12,5 +12,5 @@
 
 	<target name="compile" depends="init">
-		<javac srcdir="src" classpath="${josm}" destdir="build">
+		<javac srcdir="src" classpath="${josm}" destdir="build" debug="true">
 			<include name="**/*.java" />
 		</javac>