diff --git a/erpnext/stock/doctype/batch/batch.py b/erpnext/stock/doctype/batch/batch.py
index 3b01e7484cf..b32033c771b 100644
--- a/erpnext/stock/doctype/batch/batch.py
+++ b/erpnext/stock/doctype/batch/batch.py
@@ -316,6 +316,7 @@ def make_batch(args):
 
 @frappe.whitelist()
 def get_pos_reserved_batch_qty(filters):
+	from frappe.query_builder.functions import Sum
 	import json
 
 	if isinstance(filters, str):
@@ -323,7 +324,7 @@ def get_pos_reserved_batch_qty(filters):
 
 	p = frappe.qb.DocType("POS Invoice").as_("p")
 	item = frappe.qb.DocType("POS Invoice Item").as_("item")
-	sum_qty = frappe.query_builder.functions.Sum(item.qty).as_("qty")
+	sum_qty = Sum(item.qty).as_("qty")
 
 	reserved_batch_qty = frappe.qb.from_(p).from_(item).select(sum_qty).where(
 		(p.name == item.parent) &
@@ -337,4 +338,4 @@ def get_pos_reserved_batch_qty(filters):
 	).run()
 
 	flt_reserved_batch_qty = flt(reserved_batch_qty[0][0])
-	return flt_reserved_batch_qty
\ No newline at end of file
+	return flt_reserved_batch_qty