Index: src/org/openstreetmap/josm/actions/DuplicateAction.java
===================================================================
--- src/org/openstreetmap/josm/actions/DuplicateAction.java	(revision 1592)
+++ src/org/openstreetmap/josm/actions/DuplicateAction.java	(working copy)
@@ -26,7 +26,7 @@
     }
 
     public void actionPerformed(ActionEvent e) {
-        PasteAction.pasteData(CopyAction.copyData(), e);
+        PasteAction.pasteData(CopyAction.copyData(), null, e);
     }
 
     public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {