X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/0fd2ed230ea6d53adb5e627731672c996485167b..5c8b83a904d5dd988c0bfd86729b91a1ac763164:/librarian/text.py

diff --git a/librarian/text.py b/librarian/text.py
index bcb031d..f5aafc1 100644
--- a/librarian/text.py
+++ b/librarian/text.py
@@ -55,7 +55,8 @@ def transform(input_file, output_file, parse_dublincore=True, **options):
         else:
             source = ''
 
-        contributors = ', '.join(person.readable() for person in sorted(set(parsed_dc.technical_editors + parsed_dc.editors)))
+        contributors = ', '.join(person.readable() for person in 
+                                 sorted(set(p for p in (parsed_dc.technical_editors + parsed_dc.editors) if p)))
         if contributors:
             contributors = "\n\nOpracowanie redakcyjne i przypisy: %s" % contributors
     else: