Index: applications/editors/josm/plugins/reltoolbox/src/relcontext/ChosenRelation.java
===================================================================
--- applications/editors/josm/plugins/reltoolbox/src/relcontext/ChosenRelation.java	(revision 29459)
+++ applications/editors/josm/plugins/reltoolbox/src/relcontext/ChosenRelation.java	(revision 29531)
@@ -114,5 +114,5 @@
         }
 
-        OsmDataLayer dataLayer = Main.map.mapView.getEditLayer();
+        OsmDataLayer dataLayer = mv.getEditLayer();
         float opacity = dataLayer == null ? 0.0f : !dataLayer.isVisible() ? 0.0f : (float)dataLayer.getOpacity();
         if( opacity < 0.01 )