diff --git a/__init__.py b/__init__.py
index 02d48cb38a..90fd680fa2 100644
--- a/__init__.py
+++ b/__init__.py
@@ -30,3 +30,6 @@ def register():
         Company,
         Employee,
         module='sale_opportunity', type_='model')
+    Pool.register(
+        PartyReplace,
+        module='sale_opportunity', type_='wizard')
diff --git a/party.py b/party.py
index b65e408751..48453e60ee 100644
--- a/party.py
+++ b/party.py
@@ -2,7 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 from trytond.pool import PoolMeta
 
-__all__ = ['Party', 'Address']
+__all__ = ['Party', 'Address', 'PartyReplace']
 
 
 class Party:
@@ -15,3 +15,14 @@ class Address:
     __metaclass__ = PoolMeta
     __name__ = 'party.address'
     _history = True
+
+
+class PartyReplace:
+    __metaclass__ = PoolMeta
+    __name__ = 'party.replace'
+
+    @classmethod
+    def fields_to_replace(cls):
+        return super(PartyReplace, cls).fields_to_replace() + [
+            ('sale.opportunity', 'party'),
+            ]