diff --git a/erpnext/support/doctype/support_ticket/support_ticket.py b/erpnext/support/doctype/support_ticket/support_ticket.py
index 1c1354d..68b1c55 100644
--- a/erpnext/support/doctype/support_ticket/support_ticket.py
+++ b/erpnext/support/doctype/support_ticket/support_ticket.py
@@ -56,7 +56,11 @@
 
 		response_title = "=== In response to ==="
 
-		return "\n\n" + response_title + "\n\n" + tmp[0][0].split(response_title)[0]
+		if tmp and tmp[0][0]:
+			return "\n\n" + response_title + "\n\n" + tmp[0][0].split(response_title)[0]
+		else:
+			return ""
+
 		
 	def make_response_record(self, response, from_email = None, content_type='text/plain'):
 		"""