From 68c9f1a67309b8c75e895f12567daa224db67c17 Mon Sep 17 00:00:00 2001
From: Raphael Collet <rco@openerp.com>
Date: Thu, 23 Feb 2017 14:47:20 +0100
Subject: [PATCH] [FIX] models: missing argument

---
 odoo/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/odoo/models.py b/odoo/models.py
index ea5f49056fa..2090ee93f6a 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -2040,7 +2040,7 @@ class BaseModel(object):
                 _logger.debug("column %s is in the table %s but not in the corresponding object %s",
                               row['attname'], self._table, self._name)
             if row['attnotnull']:
-                tools.drop_not_null(self._table, row['attname'])
+                tools.drop_not_null(self._cr, self._table, row['attname'])
 
     @api.model_cr_context
     def _init_column(self, column_name):