diff --git a/addons/procurement/procurement.py b/addons/procurement/procurement.py
index badd0c7498f..f1d9bd0f680 100644
--- a/addons/procurement/procurement.py
+++ b/addons/procurement/procurement.py
@@ -441,7 +441,8 @@ class procurement_order(osv.osv):
         if len(to_cancel):
             move_obj.action_cancel(cr, uid, to_cancel)
         if len(to_assign):
-            move_obj.write(cr, uid, to_assign, {'state': 'assigned'})
+            move_obj.write(cr, uid, to_assign, {'state': 'confirmed'})
+            move_obj.action_assign(cr, uid, to_assign)
         self.write(cr, uid, ids, {'state': 'cancel'})
         wf_service = netsvc.LocalService("workflow")
         for id in ids: