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-rw-r--r--python/fatcat_tools/importers/crossref.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/fatcat_tools/importers/crossref.py b/python/fatcat_tools/importers/crossref.py
index faee6aac..3705eb81 100644
--- a/python/fatcat_tools/importers/crossref.py
+++ b/python/fatcat_tools/importers/crossref.py
@@ -413,7 +413,7 @@ class CrossrefImporter(EntityImporter):
subtitle = clean(obj.get('subtitle')[0], force_xml=True)
if not subtitle or len(subtitle) <= 1:
# subtitle can't be just a single character
- return None
+ subtitle = None
if extra_crossref:
extra['crossref'] = extra_crossref