Index: /applications/editors/josm/plugins/cadastre-fr/src/org/openstreetmap/josm/plugins/fr/cadastre/actions/mapmode/Address.java
===================================================================
--- /applications/editors/josm/plugins/cadastre-fr/src/org/openstreetmap/josm/plugins/fr/cadastre/actions/mapmode/Address.java	(revision 33705)
+++ /applications/editors/josm/plugins/cadastre-fr/src/org/openstreetmap/josm/plugins/fr/cadastre/actions/mapmode/Address.java	(revision 33706)
@@ -254,5 +254,7 @@
             }
         }
-        cmds.add(new ChangePropertyCommand(osm, tagHouseNumber, inputNumber.getText()));
+        Map<String, String> tags = new HashMap<>();
+        tags.put(tagHouseNumber, inputNumber.getText());
+        cmds.add(new ChangePropertyCommand(Main.main.getEditDataSet(), Collections.singleton(osm), tags));
         addStreetNameOrRelation(osm, cmds);
         try {