Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/LayerListDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/LayerListDialog.java	(revision 17417)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/LayerListDialog.java	(revision 17418)
@@ -905,4 +905,8 @@
             fireRefresh();
             ensureActiveSelected();
+            if (layer instanceof AbstractTileSourceLayer<?>) {
+                ((AbstractTileSourceLayer<?>) layer).getDisplaySettings().removeSettingsChangeListener(LayerListDialog.getInstance());
+            }
+
         }