Minor fix in naming naming series
diff --git a/erpnext/setup/doctype/naming_series/naming_series.py b/erpnext/setup/doctype/naming_series/naming_series.py
index cb0d437..09a019c 100644
--- a/erpnext/setup/doctype/naming_series/naming_series.py
+++ b/erpnext/setup/doctype/naming_series/naming_series.py
@@ -48,11 +48,10 @@
# validate names
for i in options: self.validate_series_name(i)
- if self.user_must_always_select:
+ if options and self.user_must_always_select:
options = [''] + options
- default = ''
- else:
- default = options[0]
+
+ default = options[0] if options else ''
# update in property setter
prop_dict = {'options': "\n".join(options), 'default': default}