diff --git a/erpnext/accounts/doctype/subscription/subscription.py b/erpnext/accounts/doctype/subscription/subscription.py
index 1103b70..480abd4 100644
--- a/erpnext/accounts/doctype/subscription/subscription.py
+++ b/erpnext/accounts/doctype/subscription/subscription.py
@@ -232,6 +232,8 @@
 def send_notification(new_rv, subscription_doc, print_format='Standard'):
 	"""Notify concerned persons about recurring document generation"""
 	print_format = print_format
+	subject = subscription_doc.subject or ''
+	message = subscription_doc.message or ''
 
 	if not subscription_doc.subject:
 		subject = _("New {0}: #{1}").format(new_rv.doctype, new_rv.name)