Update journal_entry.py
diff --git a/erpnext/accounts/doctype/journal_entry/journal_entry.py b/erpnext/accounts/doctype/journal_entry/journal_entry.py
index cb12969..11bf384 100644
--- a/erpnext/accounts/doctype/journal_entry/journal_entry.py
+++ b/erpnext/accounts/doctype/journal_entry/journal_entry.py
@@ -551,7 +551,7 @@
 	"""Returns new Journal Entry document as dict for given Purchase Invoice"""
 	pi = frappe.get_doc("Purchase Invoice", purchase_invoice)
 
-	exchange_rate = get_exchange_rate(pi.debit_to, pi.party_account_currency, pi.company,
+	exchange_rate = get_exchange_rate(pi.credit_to, pi.party_account_currency, pi.company,
 		pi.doctype, pi.name)
 
 	jv = get_payment_entry(pi)