diff --git a/business_requirement_deliverable_sale/models/business.py b/business_requirement_deliverable_sale/models/business.py
index 56f53bb1d..02a2592a1 100644
--- a/business_requirement_deliverable_sale/models/business.py
+++ b/business_requirement_deliverable_sale/models/business.py
@@ -37,15 +37,12 @@ class BusinessRequirement(models.Model):
     def product_id_change(self):
         """Get the right pricelist for product"""
         uom_id = False
-        sale_price_unit = 0
-        product = self.product_id
-
-        if product:
+        sale_price_unit = False
+        # Get base sale_price_unit from product
+        if self.product_id:
             uom_id = product.uom_id.id
             sale_price_unit = product.list_price
-
-        sale_price_unit = self.product_id.list_price
-
+        # If pricelist for customer then calculate
         if self.pricelist_id:
             product = self.product_id.with_context(
                 lang=self.partner_id.lang,
@@ -55,7 +52,7 @@ def product_id_change(self):
                 uom=self.uom_id.id,
             )
             sale_price_unit = product.price
-
+        # Default values from product when onchange product
         if uom_id:
             self.uom_id = uom_id
         self.sale_price_unit = sale_price_unit