diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 60446d0e86c..db843e6a4c7 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -350,7 +350,7 @@ class SalesInvoice(SellingController):
 				timesheet.calculate_percentage_billed()
 				timesheet.flags.ignore_validate_update_after_submit = True
 				timesheet.set_status()
-				timesheet.save()
+				timesheet.save(ignore_permissions=True)
 
 	def update_time_sheet_detail(self, timesheet, args, sales_invoice):
 		for data in timesheet.time_logs: