diff --git a/bin/osv/fields.py b/bin/osv/fields.py
index 2a4ab8837c4..7d34f686010 100644
--- a/bin/osv/fields.py
+++ b/bin/osv/fields.py
@@ -686,8 +686,9 @@ class related(function):
                         t_data = False
                         break
                     if field_detail['type'] in ('one2many', 'many2many'):
-                        t_id=t_data.id
-                        t_data = t_data[self.arg[i]][0]
+                        if self._type != "many2one":
+                            t_id=t_data.id
+                            t_data = t_data[self.arg[i]][0]
                     else:
                         t_id=t_data['id']
                         t_data = t_data[self.arg[i]]