diff --git a/erpnext/setup/doctype/naming_series/naming_series.py b/erpnext/setup/doctype/naming_series/naming_series.py
index dc7a90c..81a4c4e 100644
--- a/erpnext/setup/doctype/naming_series/naming_series.py
+++ b/erpnext/setup/doctype/naming_series/naming_series.py
@@ -26,7 +26,8 @@
 			except frappe.DoesNotExistError:
 				continue
 
-			prefixes = prefixes + "\n" + options
+			if options:
+				prefixes = prefixes + "\n" + options
 
 		prefixes.replace("\n\n", "\n")
 		prefixes = "\n".join(sorted(prefixes.split()))