Index: /applications/editors/josm/plugins/build-common.xml
===================================================================
--- /applications/editors/josm/plugins/build-common.xml	(revision 33954)
+++ /applications/editors/josm/plugins/build-common.xml	(revision 33955)
@@ -564,4 +564,5 @@
                 effort="default"
                 reportLevel="low"
+                jvmargs="-Xmx2048m"
                 >
             <auxClasspath refid="plugin.classpath" />