diff --git a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
index 050e6bc5d2..6bcce7bc99 100644
--- a/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
+++ b/erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py
@@ -309,7 +309,7 @@ def get_conditions(filters):
 
 def get_items(filters, additional_query_columns):
 	conditions = get_conditions(filters)
-
+	additional_query_columns = ",".join(additional_query_columns)
 	return frappe.db.sql(
 		"""
 		select
@@ -324,7 +324,7 @@ def get_items(filters, additional_query_columns):
 			`tabPurchase Invoice Item`.`purchase_receipt`, `tabPurchase Invoice Item`.`po_detail`,
 			`tabPurchase Invoice Item`.`expense_account`, `tabPurchase Invoice Item`.`stock_qty`,
 			`tabPurchase Invoice Item`.`stock_uom`, `tabPurchase Invoice Item`.`base_net_amount`,
-			`tabPurchase Invoice`.`supplier_name`, `tabPurchase Invoice`.`mode_of_payment` {0}
+			`tabPurchase Invoice`.`supplier_name`, `tabPurchase Invoice`.`mode_of_payment`, {0}
 		from `tabPurchase Invoice`, `tabPurchase Invoice Item`, `tabItem`
 		where `tabPurchase Invoice`.name = `tabPurchase Invoice Item`.`parent` and
 			`tabItem`.name = `tabPurchase Invoice Item`.`item_code` and
diff --git a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
index 4d24dd9076..e6b5640f45 100644
--- a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
+++ b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
@@ -381,7 +381,7 @@ def get_group_by_conditions(filters, doctype):
 
 def get_items(filters, additional_query_columns, additional_conditions=None):
 	conditions = get_conditions(filters, additional_conditions)
-
+	additional_query_columns = ",".join(additional_query_columns)
 	return frappe.db.sql(
 		"""
 		select
@@ -401,7 +401,7 @@ def get_items(filters, additional_query_columns, additional_conditions=None):
 			`tabSales Invoice Item`.stock_qty, `tabSales Invoice Item`.stock_uom,
 			`tabSales Invoice Item`.base_net_rate, `tabSales Invoice Item`.base_net_amount,
 			`tabSales Invoice`.customer_name, `tabSales Invoice`.customer_group, `tabSales Invoice Item`.so_detail,
-			`tabSales Invoice`.update_stock, `tabSales Invoice Item`.uom, `tabSales Invoice Item`.qty {0}
+			`tabSales Invoice`.update_stock, `tabSales Invoice Item`.uom, `tabSales Invoice Item`.qty, {0}
 		from `tabSales Invoice`, `tabSales Invoice Item`, `tabItem`
 		where `tabSales Invoice`.name = `tabSales Invoice Item`.parent and
 			`tabItem`.name = `tabSales Invoice Item`.`item_code` and