diff -r 0581f6d2812e -r b3d2c4065e6a server/repository.py
--- a/server/repository.py	Tue Jan 28 18:40:19 2014 +0100
+++ b/server/repository.py	Tue Jan 28 18:24:29 2014 +0100
@@ -325,9 +325,9 @@
         from cubicweb.server.schemaserial import deserialize_schema
         appschema = schema.CubicWebSchema(self.config.appid)
         self.debug('deserializing db schema into %s %#x', appschema.name, id(appschema))
-        with self.internal_session() as session:
+        with self.internal_cnx() as cnx:
             try:
-                deserialize_schema(appschema, session)
+                deserialize_schema(appschema, cnx)
             except BadSchemaDefinition:
                 raise
             except Exception as ex: