X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/bf8b3154e3a3d09be0d30516bf42a4652bcdedc8..645219bfa68384dad930269b94e2ddf8b4cd3488:/apps/catalogue/models.py

diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index f2be7d1b9..455296217 100644
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -558,7 +558,7 @@ class Book(models.Model):
                     tag.save()
                 book_tags.append(tag)
 
-        book.tags = book_tags + book_shelves
+        book.tags = set(book_tags + book_shelves)
 
         book_tag = book.book_tag()