Index: applications/editors/josm/plugins/reverter/src/reverter/DataSetToCmd.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/DataSetToCmd.java	(revision 21639)
+++ applications/editors/josm/plugins/reverter/src/reverter/DataSetToCmd.java	(revision 21640)
@@ -47,5 +47,5 @@
         OsmPrimitive target = getMergeTarget(source);
         if (target.getVersion() == 0)
-            throw new IllegalStateException(tr("Target of type {0} with id {1} have invalid version",
+            throw new IllegalStateException(tr("Target of type {0} with id {1} has invalid version",
                     target.getType(), target.getUniqueId()));
         OsmPrimitive newTarget;
Index: applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java	(revision 21639)
+++ applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetAction.java	(revision 21640)
@@ -53,5 +53,5 @@
                 if (!downloadConfirmed) {
                     downloadConfirmed = JOptionPane.showConfirmDialog(Main.parent,
-                            tr("This changeset have objects that doesn't present in current dataset.\n" + 
+                            tr("This changeset has objects that are not present in current dataset.\n" + 
                                     "It is needed to download them before reverting. Do you want to continue?"),
                             tr("Confirm"), JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION;