diff --git a/openerp/osv/orm.py b/openerp/osv/orm.py
index ef13253864b..1dd3552fc95 100644
--- a/openerp/osv/orm.py
+++ b/openerp/osv/orm.py
@@ -3234,7 +3234,7 @@ class BaseModel(object):
 
 
     def _create_table(self, cr):
-        cr.execute('CREATE TABLE "%s" (id SERIAL NOT NULL, PRIMARY KEY(id)) WITHOUT OIDS' % (self._table,))
+        cr.execute('CREATE TABLE "%s" (id SERIAL NOT NULL, PRIMARY KEY(id))' % (self._table,))
         cr.execute(("COMMENT ON TABLE \"%s\" IS %%s" % self._table), (self._description,))
         _schema.debug("Table '%s': created", self._table)
 
@@ -3318,7 +3318,7 @@ class BaseModel(object):
                 raise except_orm('Programming Error', ('Many2Many destination model does not exist: `%s`') % (f._obj,))
             dest_model = self.pool.get(f._obj)
             ref = dest_model._table
-            cr.execute('CREATE TABLE "%s" ("%s" INTEGER NOT NULL, "%s" INTEGER NOT NULL, UNIQUE("%s","%s")) WITH OIDS' % (m2m_tbl, col1, col2, col1, col2))
+            cr.execute('CREATE TABLE "%s" ("%s" INTEGER NOT NULL, "%s" INTEGER NOT NULL, UNIQUE("%s","%s"))' % (m2m_tbl, col1, col2, col1, col2))
             # create foreign key references with ondelete=cascade, unless the targets are SQL views
             cr.execute("SELECT relkind FROM pg_class WHERE relkind IN ('v') AND relname=%s", (ref,))
             if not cr.fetchall():