Index: applications/editors/josm/plugins/utilsplugin/build.xml
===================================================================
--- applications/editors/josm/plugins/utilsplugin/build.xml	(revision 18386)
+++ applications/editors/josm/plugins/utilsplugin/build.xml	(revision 18387)
@@ -25,5 +25,5 @@
                 <attribute name="Plugin-Date" value="${version.entry.commit.date}"/>
                 <attribute name="Plugin-Description" value="Several utilities that make your life easier: e.g. simplify way, join areas, jump to position."/>
-                <attribute name="Plugin-Mainversion" value="2327"/>
+                <attribute name="Plugin-Mainversion" value="2355"/>
                 <attribute name="Plugin-Version" value="${version.entry.commit.revision}"/>
             </manifest>
Index: applications/editors/josm/plugins/utilsplugin/src/UtilsPlugin/JoinAreasAction.java
===================================================================
--- applications/editors/josm/plugins/utilsplugin/src/UtilsPlugin/JoinAreasAction.java	(revision 18386)
+++ applications/editors/josm/plugins/utilsplugin/src/UtilsPlugin/JoinAreasAction.java	(revision 18387)
@@ -170,5 +170,6 @@
         if(joinAreas(selWays[0], selWays[ways == 2 ? 1 : 0])) {
             Main.map.mapView.repaint();
-            DataSet.fireSelectionChanged(Main.main.getCurrentDataSet().getSelected());
+            DataSet ds = Main.main.getCurrentDataSet();
+            ds.fireSelectionChanged();
         } else
             JOptionPane.showMessageDialog(Main.parent, tr("No intersection found. Nothing was changed."));