Index: /trunk/src/org/openstreetmap/josm/data/osm/IWaySegment.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/IWaySegment.java	(revision 17901)
+++ /trunk/src/org/openstreetmap/josm/data/osm/IWaySegment.java	(revision 17902)
@@ -44,5 +44,5 @@
      */
     public int getUpperIndex() {
-        return lowerIndex;
+        return lowerIndex + 1;
     }