diff --git a/erpnext/patches/v13_0/set_return_against_in_pos_invoice_references.py b/erpnext/patches/v13_0/set_return_against_in_pos_invoice_references.py
index 6c24f520274..6af9617bcee 100644
--- a/erpnext/patches/v13_0/set_return_against_in_pos_invoice_references.py
+++ b/erpnext/patches/v13_0/set_return_against_in_pos_invoice_references.py
@@ -2,18 +2,19 @@ import frappe
 
 
 def execute():
-	'''
+	"""
 	Fetch and Set is_return & return_against from POS Invoice in POS Invoice References table.
-	'''
+	"""
 
 	POSClosingEntry = frappe.qb.DocType("POS Closing Entry")
 	open_pos_closing_entries = (
-		frappe.qb
-			.from_(POSClosingEntry)
-			.select(POSClosingEntry.name)
-			.where(POSClosingEntry.docstatus == 0)
-			.run(pluck=True)
-		)
+		frappe.qb.from_(POSClosingEntry)
+		.select(POSClosingEntry.name)
+		.where(POSClosingEntry.docstatus == 0)
+		.run()
+	)
+	if open_pos_closing_entries:
+		open_pos_closing_entries = [d[0] for d in open_pos_closing_entries]
 
 	if not open_pos_closing_entries:
 		return
@@ -21,13 +22,12 @@ def execute():
 	POSInvoiceReference = frappe.qb.DocType("POS Invoice Reference")
 	POSInvoice = frappe.qb.DocType("POS Invoice")
 	pos_invoice_references = (
-		frappe.qb
-			.from_(POSInvoiceReference)
-			.join(POSInvoice)
-			.on(POSInvoiceReference.pos_invoice == POSInvoice.name)
-			.select(POSInvoiceReference.name, POSInvoice.is_return, POSInvoice.return_against)
-			.where(POSInvoiceReference.parent.isin(open_pos_closing_entries))
-			.run(as_dict=True)
+		frappe.qb.from_(POSInvoiceReference)
+		.join(POSInvoice)
+		.on(POSInvoiceReference.pos_invoice == POSInvoice.name)
+		.select(POSInvoiceReference.name, POSInvoice.is_return, POSInvoice.return_against)
+		.where(POSInvoiceReference.parent.isin(open_pos_closing_entries))
+		.run(as_dict=True)
 	)
 
 	for row in pos_invoice_references: