diff --git a/modules/purchase_trade/purchase.py b/modules/purchase_trade/purchase.py
index a7f96b5..4e6e74f 100755
--- a/modules/purchase_trade/purchase.py
+++ b/modules/purchase_trade/purchase.py
@@ -1342,7 +1342,7 @@ class Line(metaclass=PoolMeta):
                         cp = [c for c in self.price_summary if c.price_component == t.component]
                         if cp:
                             cp = cp[0]
-                            price = cp.get_last_price()
+                            price = Decimal(cp.get_last_price())
                             logger.info("PRICE:%s",price)
                             t.manual_price = t.payable_rule.compute_payable_quantity(grade) *  price / Decimal(100) - t.penalty_rules.compute_penalty(grade,self.quantity)
                     Concentrate.save([t])