diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 061fbbf43e7..42a3c7c2737 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -1403,18 +1403,16 @@ def validate_bom_no(item, bom_no):
 
 
 def _bom_contains_item(bom, item):
-	item_lower = item.lower()
+	item = item.lower()
 	for d in bom.items:
-		if d.item_code.lower() == item_lower:
+		if d.item_code.lower() == item:
 			return True
 	for d in bom.secondary_items:
-		if d.item_code.lower() == item_lower:
+		if d.item_code.lower() == item:
 			return True
 
-	# Use the original-cased `item` for the Item lookup: names are case-sensitive on Postgres,
-	# so a lowercased name would miss the record and drop the variant->template BOM match.
 	return (
-		bom.item.lower() == item_lower
+		bom.item.lower() == item
 		or bom.item.lower() == cstr(frappe.db.get_value("Item", item, "variant_of")).lower()
 	)