X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/d08ac1730868531e81bf918e0362935e988428ca..68be98c55bfd8af8acbf9490d7db5f3f0c528d60:/src/bookmarks/models.py

diff --git a/src/bookmarks/models.py b/src/bookmarks/models.py
index 7325e2d32..098a8b004 100644
--- a/src/bookmarks/models.py
+++ b/src/bookmarks/models.py
@@ -40,7 +40,7 @@ class Bookmark(Syncable, models.Model):
             self.audio_timestamp = self.book.sync_elid(self.anchor)
         if self.audio_timestamp:
             self.mode = 'audio'
-            self.anchor = self.book.sync_ts(self.audio_timestamp)
+            self.anchor = self.book.sync_ts(self.audio_timestamp) or ''
         return super().save(*args, **kwargs)
 
     @classmethod