diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 232e3a0b0ff4..2cd8f8c15af4 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -307,6 +307,9 @@ def update_cost(self, update_parent=True, from_child_bom=False, update_hour_rate
 		existing_bom_cost = self.total_cost
 
 		for d in self.get("items"):
+			if not d.item_code:
+				continue
+
 			rate = self.get_rm_rate({
 				"company": self.company,
 				"item_code": d.item_code,
@@ -599,7 +602,7 @@ def get_exploded_items(self):
 		for d in self.get('items'):
 			if d.bom_no:
 				self.get_child_exploded_items(d.bom_no, d.stock_qty)
-			else:
+			elif d.item_code:
 				self.add_to_cur_exploded_items(frappe._dict({
 					'item_code'		: d.item_code,
 					'item_name'		: d.item_name,