diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 1516dd6..e561291 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -180,6 +180,7 @@
 			update_coupon_code_count(self.coupon_code,'used')
 
 	def on_cancel(self):
+		self.ignore_linked_doctypes = ('GL Entry', 'Stock Ledger Entry')
 		super(SalesOrder, self).on_cancel()
 
 		# Cannot cancel closed SO