Index: /trunk/src/org/openstreetmap/josm/data/gpx/GpxConstants.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/gpx/GpxConstants.java	(revision 5909)
+++ /trunk/src/org/openstreetmap/josm/data/gpx/GpxConstants.java	(revision 5910)
@@ -24,5 +24,5 @@
     public static final String META_EXTENSIONS = META_PREFIX + "extensions";
 
-    public static final String JOSM_EXTENSIONS_NAMESPACE_URI = "http://josm.openstreetmap.de/gpx-extensions";
+    public static final String JOSM_EXTENSIONS_NAMESPACE_URI = "http://josm.openstreetmap.de/gpx-extensions-1.0";
 
     public static List<String> WPT_KEYS = Arrays.asList("ele", "time", "magvar", "geoidheight",