diff --git a/modules/purchase_trade/lot.py b/modules/purchase_trade/lot.py
index c8ac26c..2fdd0a6 100755
--- a/modules/purchase_trade/lot.py
+++ b/modules/purchase_trade/lot.py
@@ -1253,6 +1253,8 @@ class LotQt(
             'lot_theoretical_qt': theoretical,
             'lot_tol_min': tol_min,
             'lot_tol_max': tol_max,
+            'lot_tolerance_min': -tol_min,
+            'lot_tolerance_max': tol_max,
             'lot_qt_min': round(
                 theoretical * (Decimal(1) - tol_min / Decimal(100)), 5),
             'lot_qt_max': round(
@@ -3160,12 +3162,10 @@ class LotMatchingLot(ModelView):
     lot_qt_max = fields.Numeric("Qt max", readonly=True)
     lot_tol_min = fields.Numeric("Tol -", readonly=True)
     lot_tol_max = fields.Numeric("Tol +", readonly=True)
+    lot_tolerance_min = fields.Numeric("Tolerance min", readonly=True)
+    lot_tolerance_max = fields.Numeric("Tolerance max", readonly=True)
     lot_tolerance_used = fields.Function(
         fields.Numeric("Tolerance used"), 'on_change_with_lot_tolerance_used')
-    lot_tolerance_min = fields.Function(
-        fields.Numeric("Tolerance min"), 'on_change_with_lot_tolerance_min')
-    lot_tolerance_max = fields.Function(
-        fields.Numeric("Tolerance max"), 'on_change_with_lot_tolerance_max')
     lot_unit = fields.Many2One('product.uom',"Unit",readonly=True)
     lot_matched_qt = fields.Numeric("Qt to match")
     lot_cp = fields.Many2One('party.party',"Counterparty")
@@ -3193,14 +3193,6 @@ class LotMatchingLot(ModelView):
         return round(
             ((projected - theoretical) / theoretical) * Decimal(100), 5)
 
-    @fields.depends('lot_tol_min')
-    def on_change_with_lot_tolerance_min(self, name=None):
-        return -Decimal(str(self.lot_tol_min or 0))
-
-    @fields.depends('lot_tol_max')
-    def on_change_with_lot_tolerance_max(self, name=None):
-        return Decimal(str(self.lot_tol_max or 0))
-
     def get_shipment_origin(self, name):
         if self.lot_shipment_in:
             return 'stock.shipment.in,' + str(self.lot_shipment_in.id)
diff --git a/modules/purchase_trade/tests/test_module.py b/modules/purchase_trade/tests/test_module.py
index 522b999..eff3f23 100644
--- a/modules/purchase_trade/tests/test_module.py
+++ b/modules/purchase_trade/tests/test_module.py
@@ -2770,18 +2770,12 @@ class PurchaseTradeTestCase(ModuleTestCase):
         matching_lot.lot_theoretical_qt = Decimal('100')
         matching_lot.lot_already_matched_qt = Decimal('40')
         matching_lot.lot_matched_qt = Decimal('65')
-        matching_lot.lot_tol_min = Decimal('5')
-        matching_lot.lot_tol_max = Decimal('10')
+        matching_lot.lot_tolerance_min = Decimal('-5')
+        matching_lot.lot_tolerance_max = Decimal('10')
 
         self.assertEqual(
             matching_lot.on_change_with_lot_tolerance_used(),
             Decimal('5.00000'))
-        self.assertEqual(
-            matching_lot.on_change_with_lot_tolerance_min(),
-            Decimal('-5'))
-        self.assertEqual(
-            matching_lot.on_change_with_lot_tolerance_max(),
-            Decimal('10'))
 
     def test_go_matching_defaults_selected_open_lot_qts(self):
         'go to matching only preloads selected unmatched open lot.qt rows'