diff --git a/modules/sale/sale.py b/modules/sale/sale.py
index f2db1e048e..41aabbff42 100644
--- a/modules/sale/sale.py
+++ b/modules/sale/sale.py
@@ -904,6 +904,7 @@ class Sale(
         default.setdefault('invoice_state', 'none')
         default.setdefault('invoices_ignored', None)
         default.setdefault('shipment_state', 'none')
+        default.setdefault('quotation_date')
         default.setdefault('sale_date', None)
         default.setdefault('quoted_by')
         default.setdefault('confirmed_by')