--- a/server/sources/__init__.py	Mon Jul 27 10:00:32 2015 +0200
+++ b/server/sources/__init__.py	Fri Jul 24 16:09:37 2015 +0200
@@ -395,7 +395,7 @@
     # system source interface #################################################
 
     def eid_type_source(self, cnx, eid):
-        """return a tuple (type, source, extid) for the entity with id <eid>"""
+        """return a tuple (type, extid, source) for the entity with id <eid>"""
         raise NotImplementedError(self)
 
     def create_eid(self, cnx):