diff --git a/__tryton__.py b/__tryton__.py
index e2f7aaf4cc..53288c3384 100644
--- a/__tryton__.py
+++ b/__tryton__.py
@@ -1,4 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level of this repository contains the full copyright notices and license terms.
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
 {
     'name': 'Purchase',
     'version': '0.1',
@@ -9,7 +10,7 @@
     'description': 'Purchase Management',
     'depends': [
         'company',
-        'relationship',
+        'party',
         'stock',
         'account',
         'product',
diff --git a/purchase.odt b/purchase.odt
index 439abd2448..daed884b73 100644
Binary files a/purchase.odt and b/purchase.odt differ
diff --git a/purchase.py b/purchase.py
index 0e4a0daf04..1d61932ae9 100644
--- a/purchase.py
+++ b/purchase.py
@@ -35,14 +35,14 @@ class Purchase(OSV):
     purchase_date = fields.Date('Purchase Date', required=True, states=_STATES)
     payment_term = fields.Many2One('account.invoice.payment_term',
         'Payment Term', required=True, states=_STATES)
-    party = fields.Many2One('relationship.party', 'Party', change_default=True,
+    party = fields.Many2One('party.party', 'Party', change_default=True,
             required=True, states=_STATES, on_change=['party', 'payment_term'],
             select=1)
     party_lang = fields.Function('get_function_fields', type='char',
             string='Party Language', on_change_with=['party'])
-    contact_address = fields.Many2One('relationship.address', 'Contact Address',
+    contact_address = fields.Many2One('party.address', 'Contact Address',
             domain="[('party', '=', party)]", states=_STATES)
-    invoice_address = fields.Many2One('relationship.address', 'Invoice Address',
+    invoice_address = fields.Many2One('party.address', 'Invoice Address',
             domain="[('party', '=', party)]", states=_STATES)
     warehouse = fields.Many2One('stock.location', 'Warehouse',
             domain=[('type', '=', 'warehouse')], required=True, states=_STATES)
@@ -171,8 +171,8 @@ class Purchase(OSV):
         return 'none'
 
     def on_change_party(self, cursor, user, ids, vals, context=None):
-        party_obj = self.pool.get('relationship.party')
-        address_obj = self.pool.get('relationship.address')
+        party_obj = self.pool.get('party.party')
+        address_obj = self.pool.get('party.address')
         payment_term_obj = self.pool.get('account.invoice.payment_term')
         res = {
             'invoice_address': False,
@@ -230,7 +230,7 @@ class Purchase(OSV):
 
     def on_change_with_party_lang(self, cursor, user, ids, vals,
             context=None):
-        party_obj = self.pool.get('relationship.party')
+        party_obj = self.pool.get('party.party')
         if vals.get('party'):
             party = party_obj.browse(cursor, user, vals['party'],
                     context=context)
@@ -239,7 +239,7 @@ class Purchase(OSV):
         return 'en_US'
 
     def get_tax_context(self, cursor, user, purchase, context=None):
-        party_obj = self.pool.get('relationship.party')
+        party_obj = self.pool.get('party.party')
         res = {}
         if isinstance(purchase, dict):
             if purchase.get('party'):
@@ -871,7 +871,7 @@ class PurchaseLine(OSV):
         return res
 
     def on_change_product(self, cursor, user, ids, vals, context=None):
-        party_obj = self.pool.get('relationship.party')
+        party_obj = self.pool.get('party.party')
         product_obj = self.pool.get('product.product')
         uom_obj = self.pool.get('product.uom')
         if context is None:
@@ -1234,7 +1234,7 @@ class ProductSupplier(OSV):
 
     product = fields.Many2One('product.template', 'Product', required=True,
             ondelete='CASCADE', select=1)
-    party = fields.Many2One('relationship.party', 'Supplier', required=True,
+    party = fields.Many2One('party.party', 'Supplier', required=True,
             ondelete='CASCADE', select=1)
     name = fields.Char('Name', size=None, translate=True, select=1)
     code = fields.Char('Code', size=None, select=1)
@@ -1382,7 +1382,7 @@ class Move(OSV):
             relation='purchase.purchase', string='Purchase',
             fnct_search='search_purchase', select=1)
     supplier = fields.Function('get_supplier', type='many2one',
-            relation='relationship.party', string='Supplier',
+            relation='party.party', string='Supplier',
             fnct_search='search_supplier', select=1)
 
     def get_purchase(self, cursor, user, ids, name, arg, context=None):
@@ -1416,7 +1416,7 @@ class Move(OSV):
         return args2
 
     def get_supplier(self, cursor, user, ids, name, arg, context=None):
-        party_obj = self.pool.get('relationship.party')
+        party_obj = self.pool.get('party.party')
 
         res = {}
         for move in self.browse(cursor, user, ids, context=context):
@@ -1489,7 +1489,7 @@ class OpenSupplier(Wizard):
 
         model_data_ids = model_data_obj.search(cursor, user, [
             ('fs_id', '=', 'act_party_form'),
-            ('module', '=', 'relationship'),
+            ('module', '=', 'party'),
             ('inherit', '=', False),
             ], limit=1, context=context)
         model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
diff --git a/purchase.xml b/purchase.xml
index e63611397f..75cce47997 100644
--- a/purchase.xml
+++ b/purchase.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0"?>
-<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of this repository contains the full copyright notices and license terms. -->
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
 <tryton>
     <data>
         <menuitem name="Purchase Management" id="menu_purchase" sequence="4"/>
@@ -760,7 +761,7 @@
             <field name="wiz_name">purchase.open_supplier</field>
         </record>
         <menuitem name="Suppliers"
-            parent="relationship.menu_party_form"
+            parent="party.menu_party_form"
             action="act_open_supplier"
             icon="tryton-list"
             id="menu_supplier"/>