Index: src/org/openstreetmap/josm/actions/DiskAccessAction.java
===================================================================
--- src/org/openstreetmap/josm/actions/DiskAccessAction.java	(revision 4334)
+++ src/org/openstreetmap/josm/actions/DiskAccessAction.java	(working copy)
@@ -34,7 +34,7 @@
             fc.setDialogTitle(title);
         }
 
-        fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
+        fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
         fc.setMultiSelectionEnabled(multiple);
         fc.setAcceptAllFileFilterUsed(false);
         //System.out.println("opening fc for extension " + extension);