Index: /trunk/src/org/openstreetmap/josm/gui/history/HistoryBrowserDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/history/HistoryBrowserDialog.java	(revision 14464)
+++ /trunk/src/org/openstreetmap/josm/gui/history/HistoryBrowserDialog.java	(revision 14465)
@@ -205,5 +205,5 @@
     @Override
     public void dispose() {
-        HistoryDataSet.getInstance().removeHistoryDataSetListener(HistoryBrowserDialog.this);
+        HistoryDataSet.getInstance().removeHistoryDataSetListener(this);
         GuiHelper.destroyComponents(this, false);
         super.dispose();