diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 23ad223..4e0d1c9 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -165,17 +165,6 @@
 
 		super(PurchaseInvoice, self).set_missing_values(for_validate)
 
-	def check_conversion_rate(self):
-		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"))
-
 	def validate_credit_to_acc(self):
 		if not self.credit_to:
 			self.credit_to = get_party_account("Supplier", self.supplier, self.company)
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index a580d45..1a3164b 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -114,6 +114,7 @@
 		self.set_income_account_for_fixed_assets()
 		self.validate_item_cost_centers()
 		self.validate_income_account()
+		self.check_conversion_rate()
 
 		validate_inter_company_party(
 			self.doctype, self.customer, self.company, self.inter_company_invoice_reference
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 854c0d0..389d7cc 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -1838,6 +1838,17 @@
 		jv.save()
 		jv.submit()
 
+	def check_conversion_rate(self):
+		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"))
+
 
 @frappe.whitelist()
 def get_tax_rate(account_head):