diff -r 072562663a50 tryton/gui/main.py
--- ./tryton/tryton/gui/main.py        Fri May 09 10:13:53 2014 +0200
+++ ./tryton/tryton/gui/main.py        Sat May 24 18:14:02 2014 +0200
@@ -1420,10 +1420,12 @@
         if not urlp.scheme == 'tryton':
             return
         urlp = urlparse('http' + url[6:])
-        hostname, port = map(urllib.unquote,
-            (urlp.netloc.split(':', 1) + [CONFIG.defaults['login.port']])[:2])
-        database, path = map(urllib.unquote,
-            (urlp.path[1:].split('/', 1) + [None])[:2])
+        hostname = urllib.unquote(urlp.hostname or
+            CONFIG.defaults['login.server'])
+        port = urlp.port or str(CONFIG.defaults['login.port'])
+        path = urlp.path[1:].split('/', 1)
+        database = urllib.unquote(path.pop(0))
+        path = path and urllib.unquote(path[0]) or ""
         if (not path or
                 hostname != rpc._HOST or
                 int(port) != rpc._PORT or
)