diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.py b/erpnext/accounts/doctype/payment_entry/payment_entry.py
index 18f3572..94253bd 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.py
@@ -1523,8 +1523,10 @@
 	pe.paid_amount = paid_amount
 	pe.received_amount = received_amount
 	pe.letter_head = doc.get("letter_head")
-	if dt == 'Purchase Order':
-		pe.project = reduce(lambda prev,cur: prev or cur, [x.project for x in doc.get('items')], None) # get first non-empty project from items
+
+	if dt in ['Purchase Order', 'Sales Order', 'Sales Invoice', 'Purchase Invoice']:
+		pe.project = (doc.get('project') or
+					  reduce(lambda prev,cur: prev or cur, [x.get('project') for x in doc.get('items')], None)) # get first non-empty project from items
 
 	if pe.party_type in ["Customer", "Supplier"]:
 		bank_account = get_party_bank_account(pe.party_type, pe.party)