X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/eae370b75207e1dc15f5f3f7ee7a402c7721d9a8..18db48c927f52d497aea34b5d0daf855902367a3:/src/librarian/builders/mobi.py

diff --git a/src/librarian/builders/mobi.py b/src/librarian/builders/mobi.py
index 19b5036..a001e90 100644
--- a/src/librarian/builders/mobi.py
+++ b/src/librarian/builders/mobi.py
@@ -1,5 +1,7 @@
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Wolne Lektury. See NOTICE for more information.
+#
 import os
-import six
 import subprocess
 from tempfile import NamedTemporaryFile
 from librarian import functions, get_resource, OutputFile
@@ -41,5 +43,6 @@ class MobiBuilder(EpubBuilder):
                                '--mobi-file-type=both',
                                '--mobi-ignore-margins',
                                ], **gen_kwargs)
+        devnull.close()
         return OutputFile.from_filename(output_file.name)