diff -r 52c9d25101a1 -r 1c635a91e403 server/hook.py
--- a/server/hook.py	Fri Apr 09 15:01:14 2010 +0000
+++ b/server/hook.py	Fri Apr 09 15:01:25 2010 +0000
@@ -30,7 +30,6 @@
 
 Session hooks (eg session_open, session_close) have no special attribute.
 
-
 :organization: Logilab
 :copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
 :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
@@ -471,7 +470,7 @@
     try:
         session.transaction_data[datakey].add(value)
     except KeyError:
-        opcls(session, *opkwargs)
+        opcls(session, **opkwargs)
         session.transaction_data[datakey] = set((value,))