Index: /trunk/src/org/openstreetmap/josm/actions/UndoAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/UndoAction.java	(revision 5288)
+++ /trunk/src/org/openstreetmap/josm/actions/UndoAction.java	(revision 5289)
@@ -49,5 +49,5 @@
             putValue(NAME, tr("Undo ..."));
             setTooltip(tr("Undo {0}",
-                    Main.main.undoRedo.commands.getFirst().getDescriptionText()));
+                    Main.main.undoRedo.commands.getLast().getDescriptionText()));
         }
     }