diff --git a/packages/db/elastic_migrations/migrate_from_elastic.py b/packages/db/elastic_migrations/migrate_from_elastic.py
index ff150a3f3..d735a3db6 100755
--- a/packages/db/elastic_migrations/migrate_from_elastic.py
+++ b/packages/db/elastic_migrations/migrate_from_elastic.py
@@ -339,7 +339,7 @@ async def main():
                 source['content'],
                 source['url'],
                 source.get('uploadFileId', None),
-                page_type,
+                page_type if page_type is not None else 'UNKNOWN',
                 source['slug'],
                 source.get('readingProgressTopPercent', 0),
                 source.get('readingProgressPercent', 0),