Index: applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfReader.java
===================================================================
--- applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfReader.java	(revision 32865)
+++ applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfReader.java	(revision 33165)
@@ -79,5 +79,5 @@
                 Bounds b = new Bounds(minlat, minlon, maxlat, maxlon);
                 if (!b.isCollapsed() && areCoordinatesValid(minlat, minlon, maxlat, maxlon)) {
-                    ds.dataSources.add(new DataSource(b, header.getSource()));
+                    ds.addDataSource(new DataSource(b, header.getSource()));
                 } else {
                     Main.error("Invalid Bounds: "+b);
Index: applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfWriter.java
===================================================================
--- applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfWriter.java	(revision 32865)
+++ applications/editors/josm/plugins/pbf/src/org/openstreetmap/josm/plugins/pbf/io/PbfWriter.java	(revision 33165)
@@ -484,5 +484,5 @@
 
         public void process(DataSet ds) {
-            processor.processSources(ds.dataSources);
+            processor.processSources(ds.getDataSources());
             Comparator<OsmPrimitive> cmp = Comparator.comparingLong(OsmPrimitive::getUniqueId);
             ds.getNodes().stream().sorted(cmp).filter(n -> n.isLatLonKnown()).forEach(processor::processNode);