diff --git a/bin/addons/base/res/partner/partner.py b/bin/addons/base/res/partner/partner.py
index d0c3cf85e9d..43b857c1cb6 100644
--- a/bin/addons/base/res/partner/partner.py
+++ b/bin/addons/base/res/partner/partner.py
@@ -166,7 +166,7 @@ class res_partner(osv.osv):
     }
     def copy(self, cr, uid, id, default=None, context={}):
         name = self.read(cr, uid, [id], ['name'])[0]['name']
-        default.update({'name': name+' (copy)'})
+        default.update({'name': name+' (copy)', 'events':[]})
         return super(res_partner, self).copy(cr, uid, id, default, context)
 
     def _check_ean_key(self, cr, uid, ids):