diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index 27930c8a3e7..7ef8920f305 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -1205,7 +1205,7 @@ class stock_move(osv.osv):
 
     def _check_product_lot(self, cr, uid, ids):
         for move in self.browse(cr, uid, ids):
-            if move.prodlot_id and (move.prodlot_id.product_id.id != move.product_id.id):
+            if move.prodlot_id and move.state == 'done' and (move.prodlot_id.product_id.id != move.product_id.id):
                 return False
         return True