diff --git a/erpnext/accounts/report/gross_profit/gross_profit.py b/erpnext/accounts/report/gross_profit/gross_profit.py
index 4afce91..b500d6c 100644
--- a/erpnext/accounts/report/gross_profit/gross_profit.py
+++ b/erpnext/accounts/report/gross_profit/gross_profit.py
@@ -98,16 +98,17 @@
 
 			row.base_amount = flt(row.base_net_amount)
 
+			product_bundles = []
 			if row.update_stock:
 				product_bundles = self.product_bundles.get(row.parenttype, {}).get(row.parent, frappe._dict())
 			elif row.dn_detail:
 				product_bundles = self.product_bundles.get("Delivery Note", {})\
 					.get(row.delivery_note, frappe._dict())
 				row.item_row = row.dn_detail
-			
+
 			# get buying amount
 			if row.item_code in product_bundles:
-				row.buying_amount = self.get_buying_amount_from_product_bundle(row, 
+				row.buying_amount = self.get_buying_amount_from_product_bundle(row,
 					product_bundles[row.item_code])
 			else:
 				row.buying_amount = self.get_buying_amount(row, row.item_code)
@@ -184,7 +185,7 @@
 				parenttype, parent = row.parenttype, row.parent
 				if row.dn_detail:
 					parenttype, parent = "Delivery Note", row.delivery_note
-				
+
 				for i, sle in enumerate(my_sle):
 					# find the stock valution rate from stock ledger entry
 					if sle.voucher_type == parenttype and parent == sle.voucher_no and \