diff --git a/modules/purchase_trade/fee.py b/modules/purchase_trade/fee.py
index 66a5f6e..9a91da9 100755
--- a/modules/purchase_trade/fee.py
+++ b/modules/purchase_trade/fee.py
@@ -153,7 +153,7 @@ class Fee(ModelSQL,ModelView):
 
     @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':
+        if self.mode != 'ppack' and self.mode != 'perqt':
             line = self.line
             if not line:
                 line = self.sale_line