diff --git a/modules/purchase_trade/fee.py b/modules/purchase_trade/fee.py
index 2771185..0b7f0f8 100755
--- a/modules/purchase_trade/fee.py
+++ b/modules/purchase_trade/fee.py
@@ -129,6 +129,7 @@ class Fee(ModelSQL,ModelView):
         if line:
             if line.lots:
                 qt = sum([e.get_current_quantity_converted(0,self.unit) for e in line.lots])
+                qt_ = sum([e.get_current_quantity_converted(0) for e in line.lots])
                 unit = line.lots[0].lot_unit_line
                 logger.info("ON_CHANGE_WITH_QT0:%s",qt)
         logger.info("ON_CHANGE_WITH_SI:%s",self.shipment_in)
@@ -138,6 +139,7 @@ class Fee(ModelSQL,ModelView):
             logger.info("ON_CHANGE_WITH_LOTS:%s",lots)
             if lots:
                 qt = sum([e.get_current_quantity_converted(0,self.unit) for e in lots])
+                qt_ = sum([e.get_current_quantity_converted(0) for e in lots])
                 unit = lots[0].lot_unit_line
         if not qt:
             logger.info("ON_CHANGE_WITH_QT1:%s",qt)
@@ -146,13 +148,14 @@ class Fee(ModelSQL,ModelView):
                 lqts = LotQt.search(['lot_shipment_in','=',self.shipment_in.id])
                 if lqts:
                     qt = Decimal(lqts[0].lot_quantity)
+                    qt_ = qt
                     unit = lqts[0].lot_unit
                     logger.info("ON_CHANGE_WITH_QT2:%s",qt)
         if self.mode != 'ppack':
             return qt
         else:
             if self.auto_calculation:
-                return (qt * Decimal(unit.factor) / Decimal(self.unit.factor)).to_integral_value(rounding=ROUND_UP)
+                return (qt_ * Decimal(unit.factor) / Decimal(self.unit.factor)).to_integral_value(rounding=ROUND_UP)
 
     @fields.depends('price','mode','_parent_line.lots','_parent_sale_line.lots','shipment_in')
     def on_change_with_unit(self, name=None):