diff --git a/modules/purchase_trade/valuation.py b/modules/purchase_trade/valuation.py
index a6c996c..608351f 100644
--- a/modules/purchase_trade/valuation.py
+++ b/modules/purchase_trade/valuation.py
@@ -303,8 +303,8 @@ class ValuationBase(ModelSQL):
                     with Transaction().set_context(date=Date.today()):
                         price = Currency.compute(sf.currency, price, line.purchase.currency)
                 if line.mtm:
+                    qty = round(lot.get_current_quantity_converted(), 5)
                     for strat in line.mtm:
-                        qty = round(lot.get_current_quantity_converted(), 5)
                         fee_lines.append({
                             'lot': lot.id,
                             'sale': lot.sale_line.sale.id if lot.sale_line else None,