Index: /trunk/src/org/openstreetmap/josm/actions/CombineWayAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/CombineWayAction.java	(revision 3509)
+++ /trunk/src/org/openstreetmap/josm/actions/CombineWayAction.java	(revision 3510)
@@ -116,4 +116,5 @@
             return null;
         }
+        Main.main.undoRedo.add(combineResult.b);
         return combineResult.a;
     }