diff --git a/modules/purchase_requisition/purchase.py b/modules/purchase_requisition/purchase.py
index 0551105c74..7a72baefdf 100644
--- a/modules/purchase_requisition/purchase.py
+++ b/modules/purchase_requisition/purchase.py
@@ -345,8 +345,6 @@ class PurchaseRequisition(Workflow, ModelSQL, ModelView):
     @reset_employee('approved_by', 'rejected_by')
     def draft(cls, requisitions):
         cls.write(requisitions, {
-                'tax_amount_cache': None,
-                'untaxed_amount_cache': None,
                 'total_amount_cache': None,
                 })