diff --git a/modules/purchase_trade/fee.py b/modules/purchase_trade/fee.py
index a8d89c6..f905120 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('price','mode','_parent_line.lots','_parent_sale_line.lots')
+    @fields.depends('price','mode','_parent_line.lots','_parent_sale_line.lots','shipment_in')
     def on_change_with_unit(self, name=None):
         if self.mode != 'ppack':
             line = self.line