diff --git a/erpnext/accounts/doctype/pricing_rule/utils.py b/erpnext/accounts/doctype/pricing_rule/utils.py
index de63ec3a8c4..fde3b9e48dd 100644
--- a/erpnext/accounts/doctype/pricing_rule/utils.py
+++ b/erpnext/accounts/doctype/pricing_rule/utils.py
@@ -583,11 +583,7 @@ def apply_pricing_rule_on_transaction(doc):
 					if not d.get(pr_field):
 						continue
 
-					if (
-						d.validate_applied_rule
-						and doc.get(field) is not None
-						and doc.get(field) < d.get(pr_field)
-					):
+					if d.validate_applied_rule and (doc.get(field) or 0) < d.get(pr_field):
 						frappe.msgprint(_("User has not applied rule on the invoice {0}").format(doc.name))
 					else:
 						if not d.coupon_code_based: