Index: /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java	(revision 11848)
+++ /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java	(revision 11849)
@@ -299,5 +299,5 @@
         private Collection<OsmPrimitive> searchPrimitivesToUpdate(Bounds bounds, DataSet ds) {
             if (bounds == null)
-                return Collections.EMPTY_SET;
+                return Collections.emptySet();
             Collection<OsmPrimitive> col = new ArrayList<>();
             ds.searchNodes(bounds.toBBox()).stream().filter(n -> !n.isNew() && !dataSet.containsNode(n)).forEachOrdered(col::add);