Index: /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java
===================================================================
--- /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java	(revision 30610)
+++ /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java	(revision 30611)
@@ -183,5 +183,5 @@
             final String txt = relationExists ? tr("add to existing associatedStreet relation") : tr("create an associatedStreet relation");
 
-            handleRelationCheckBox = new JCheckBox(txt, Main.pref.getBoolean(HANDLE_RELATION, true));
+            handleRelationCheckBox = new JCheckBox(txt, relationExists ? Main.pref.getBoolean(HANDLE_RELATION, true) : false);
             deleteOutlineCheckBox = new JCheckBox(tr("delete outline way"), Main.pref.getBoolean(DELETE_OUTLINE, true));