diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 1fb00ef..8bf124e 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -961,11 +961,8 @@
 
 	valuation_rate = item_valuation.get("valuation_rate")
 
-	if valuation_rate is None:
-		# Explicit null value check. If null, Bins don't exist, neither does SLE
-		return valuation_rate
-
-	if valuation_rate <= 0:
+	if (valuation_rate is not None) and valuation_rate <= 0:
+		# Explicit null value check. If None, Bins don't exist, neither does SLE
 		last_valuation_rate = frappe.db.sql(
 			"""select valuation_rate
 			from `tabStock Ledger Entry`