--- a/misc/migration/3.17.11_Any.py	Thu Jun 27 08:52:15 2013 +0200
+++ b/misc/migration/3.17.11_Any.py	Wed Jan 22 15:49:32 2014 +0100
@@ -2,6 +2,6 @@
         ('transactions', 'tx_time'),
         ('tx_entity_actions', 'tx_uuid'),
         ('tx_relation_actions', 'tx_uuid')]:
-    session.cnxset.source('system').create_index(session, table, column)
+    repo.system_source.create_index(session, table, column)
 
 commit()