Index: applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java	(revision 21634)
+++ applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java	(revision 21635)
@@ -70,6 +70,7 @@
             @Override
             protected void realRun() throws OsmTransferException {
+                progressMonitor.indeterminateSubTask("Downloading changeset");
                 rev = new ChangesetReverter(changesetId, NullProgressMonitor.INSTANCE);
-                progressMonitor.indeterminateSubTask("Downloading changeset");
+                if (progressMonitor.isCancelled()) return;
                 if (!checkMissing()) return;
                 rev.downloadObjectsHistory(progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));