Index: trunk/src/org/openstreetmap/josm/gui/dialogs/RelationListDialog.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/RelationListDialog.java	(revision 5727)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/RelationListDialog.java	(revision 5728)
@@ -917,9 +917,8 @@
             }
             for (Relation r: sel) {
-                int i = getVisibleRelationIndex(r);
-                if (i<0) {
-                    continue;
-                }
-                selectionModel.addSelectionInterval(i,i);
+                Integer i = getVisibleRelationIndex(r);
+                if (i != null) {
+                    selectionModel.addSelectionInterval(i,i);
+                }
             }
         }