Index: trunk/src/org/openstreetmap/josm/data/gpx/GpxExtension.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/gpx/GpxExtension.java	(revision 15503)
+++ trunk/src/org/openstreetmap/josm/data/gpx/GpxExtension.java	(revision 15504)
@@ -9,8 +9,8 @@
 
 /**
- * A GpxExtension that has attributes and child extensions (implements {@link IWithAttributes}).
+ * A GpxExtension that has attributes and child extensions (implements {@link IWithAttributes} and {@link GpxConstants}).
  * @since 15496
  */
-public class GpxExtension extends WithAttributes implements GpxConstants {
+public class GpxExtension extends WithAttributes {
     private final String qualifiedName, prefix, key;
     private IWithAttributes parent;