diff --git a/openerp/fields.py b/openerp/fields.py
index 0192fbac6c3..580cfd0e09b 100644
--- a/openerp/fields.py
+++ b/openerp/fields.py
@@ -1462,7 +1462,7 @@ class Many2one(_Relational):
         elif isinstance(value, dict):
             return record.env[self.comodel_name].new(value)
         else:
-            return record.env[self.comodel_name].browse(value)
+            return self.null(record.env)
 
     def convert_to_read(self, value, use_name_get=True):
         if use_name_get and value: