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-rw-r--r--python/tests/import_crossref.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/tests/import_crossref.py b/python/tests/import_crossref.py
index ebe6942f..a2c8681b 100644
--- a/python/tests/import_crossref.py
+++ b/python/tests/import_crossref.py
@@ -87,7 +87,7 @@ def test_crossref_dict_parse(crossref_importer):
assert r.ext_ids.doi == "10.1002/(sici)1097-461x(1998)66:4<261::aid-qua1>3.0.co;2-t"
assert r.ext_ids.isbn13 == "978-3-16-148410-0"
assert r.language == "fr"
- assert r.subtitle == None
+ assert r.subtitle is None
assert 'subtitle' not in r.extra
assert 'subtitle' not in r.extra['crossref']
assert 'funder' not in r.extra