diff --git a/addons/sale/stock.py b/addons/sale/stock.py
index f9e0c38494b..c020389ba19 100644
--- a/addons/sale/stock.py
+++ b/addons/sale/stock.py
@@ -69,6 +69,13 @@ class stock_picking(osv.osv):
 
     def _get_price_unit_invoice(self, cursor, user, move_line, type):
         if move_line.sale_line_id and move_line.sale_line_id.product_id.id == move_line.product_id.id:
+            from_uom_id = move_line.product_id.uom_id.id
+            to_uom_id = move_line.product_id.uos_id.id
+            price = move_line.sale_line_id.price_unit
+            coeff = move_line.product_id.uos_coeff
+            if from_uom_id != to_uom_id  and coeff != 0:
+                price_unit = price / coeff
+                return price_unit
             return move_line.sale_line_id.price_unit
         return super(stock_picking, self)._get_price_unit_invoice(cursor, user, move_line, type)