diff --git a/configuration.py b/configuration.py
index 57834d8584..2b54f4acf6 100644
--- a/configuration.py
+++ b/configuration.py
@@ -5,10 +5,11 @@ from trytond.model import ModelView, ModelSQL, ModelSingleton, fields
 from trytond.model import MultiValueMixin, ValueMixin
 from trytond.pool import Pool
 from trytond.tools.multivalue import migrate_property
+from trytond.pyson import Id
 
 party_sequence = fields.Many2One('ir.sequence', 'Party Sequence',
     domain=[
-        ('code', '=', 'party.party'),
+        ('sequence_type', '=', Id('party', 'sequence_type_party')),
         ],
     help="Used to generate the party code.")
 party_lang = fields.Many2One("ir.lang", 'Party Language',
diff --git a/party.py b/party.py
index c4cc40afe4..c05e8b71af 100644
--- a/party.py
+++ b/party.py
@@ -172,12 +172,11 @@ class Party(DeactivableMixin, ModelSQL, ModelView, MultiValueMixin):
     @classmethod
     def _new_code(cls, **pattern):
         pool = Pool()
-        Sequence = pool.get('ir.sequence')
         Configuration = pool.get('party.configuration')
         config = Configuration(1)
         sequence = config.get_multivalue('party_sequence', **pattern)
         if sequence:
-            return Sequence.get_id(sequence.id)
+            return sequence.get()
 
     @classmethod
     def create(cls, vlist):
diff --git a/party.xml b/party.xml
index 585a6e74d3..0541342bfe 100644
--- a/party.xml
+++ b/party.xml
@@ -92,7 +92,6 @@ this repository contains the full copyright notices and license terms. -->
 
         <record model="ir.sequence.type" id="sequence_type_party">
             <field name="name">Party</field>
-            <field name="code">party.party</field>
         </record>
         <record model="ir.sequence.type-res.group"
             id="sequence_type_party_group_admin">
@@ -107,7 +106,7 @@ this repository contains the full copyright notices and license terms. -->
 
         <record model="ir.sequence" id="sequence_party">
             <field name="name">Party</field>
-            <field name="code">party.party</field>
+            <field name="sequence_type" ref="sequence_type_party"/>
         </record>
 
         <record model="ir.ui.view" id="identifier_form">