Index: applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/gui/MapillaryPreferenceSetting.java
===================================================================
--- applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/gui/MapillaryPreferenceSetting.java	(revision 31974)
+++ applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/gui/MapillaryPreferenceSetting.java	(revision 31975)
@@ -171,5 +171,5 @@
       portListener.start();
       try {
-        MapillaryUtils.browse(MapillaryURL.connectURL("http://localhost:"+OAuthPortListener.PORT));
+        MapillaryUtils.browse(MapillaryURL.connectURL("http://localhost:"+OAuthPortListener.PORT+'/'));
       } catch (IOException e) {
         Main.error(e);