diff --git a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
index aa62690694228fa7f24e9963db30a879829045e0..b44461a6608e2e82dba198af8b47289ed43d6186 100644
--- a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
@@ -1777,17 +1777,6 @@ class TestSalesInvoice(FrappeTestCase):
 			for field in expected_gle:
 				self.assertEqual(expected_gle[field], gle[field])
 
-	def test_invoice_exchange_rate(self):
-		si = create_sales_invoice(
-			customer="_Test Customer USD",
-			debit_to="_Test Receivable USD - _TC",
-			currency="USD",
-			conversion_rate=1,
-			do_not_save=1,
-		)
-
-		self.assertRaises(frappe.ValidationError, si.save)
-
 	def test_invalid_currency(self):
 		# Customer currency = USD
 
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index e5353f955a76af940abb6eb7f47cf309a13d20ed..982cb9cd337664158e212f02079cb1e4d590afb8 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -2564,12 +2564,17 @@ class AccountsController(TransactionBase):
 		default_currency = erpnext.get_company_currency(self.company)
 		if not default_currency:
 			throw(_("Please enter default currency in Company Master"))
-		if (
-			(self.currency == default_currency and flt(self.conversion_rate) != 1.00)
-			or not self.conversion_rate
-			or (self.currency != default_currency and flt(self.conversion_rate) == 1.00)
-		):
-			throw(_("Conversion rate cannot be 0 or 1"))
+
+		if not self.conversion_rate:
+			throw(_("Conversion rate cannot be 0"))
+
+		if self.currency == default_currency and flt(self.conversion_rate) != 1.00:
+			throw(_("Conversion rate must be 1.00 if document currency is same as company currency"))
+
+		if self.currency != default_currency and flt(self.conversion_rate) == 1.00:
+			frappe.msgprint(
+				_("Conversion rate is 1.00, but document currency is different from company currency")
+			)
 
 	def check_finance_books(self, item, asset):
 		if (