diff --git a/modules/purchase_trade/fee.py b/modules/purchase_trade/fee.py
index 6561764..0f45677 100755
--- a/modules/purchase_trade/fee.py
+++ b/modules/purchase_trade/fee.py
@@ -144,7 +144,7 @@ class Fee(ModelSQL,ModelView):
             if self.auto_calculation:
                 return (qt * Decimal(unit.factor) / Decimal(self.unit.factor)).to_integral_value(rounding=ROUND_UP)
 
-    @fields.depends('mode','_parent_line.lots','_parent_sale_line.lots')
+    @fields.depends('price','mode','_parent_line.lots','_parent_sale_line.lots')
     def on_change_with_unit(self, name=None):
         if self.mode != 'ppack':
             line = self.line
@@ -156,6 +156,12 @@ class Fee(ModelSQL,ModelView):
                         return line.lots[0].lot_unit_line
                     else:
                         return line.lots[1].lot_unit_line
+            if self.shipment_in:
+                Lot = Pool().get('lot.lot')
+                lots = Lot.search([('lot_shipment_in','=',self.shipment_in.id)])
+                logger.info("ON_CHANGE_WITH_UNIT:%s",lots)
+                if lots:
+                    return lots[0].lot_unit_line
         else:
             return None