diff --git a/Dockerfile b/Dockerfile
index b44da74..570259a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,6 +31,6 @@ RUN cd frontend \
     && rm -r node_modules
 
 
-RUN cat /src/cbreader/crontab >> /etc/cron.daily/cbreader
+RUN cat /src/cbreader/crontab >> /etc/crontab
 
 EXPOSE 8000
diff --git a/cbreader/crontab b/cbreader/crontab
index f5e86b6..7ef4832 100644
--- a/cbreader/crontab
+++ b/cbreader/crontab
@@ -1 +1 @@
-*/15    *       *       *       *       python /src/manage.py scan_comics --settings=cbreader.settings.base
\ No newline at end of file
+*/15 * * * * root /src/.venv/bin/python /src/manage.py scan_comics --settings=cbreader.settings.base
diff --git a/comic/processing.py b/comic/processing.py
index dd9d750..73acaa7 100644
--- a/comic/processing.py
+++ b/comic/processing.py
@@ -85,13 +85,14 @@ def clean_files(files: QuerySet, user: AbstractBaseUser, dir_path: Path, directo
     for new_comic in file_list - files_db_set:
         if new_comic.suffix.lower() in settings.SUPPORTED_FILES:
             new_book = models.ComicBook(file_name=new_comic.name, directory=directory)
-            archive, archive_type = new_book.get_archive()
             try:
+                archive, archive_type = new_book.get_archive()
                 if archive_type == 'archive':
                     new_book.page_count = len(get_archive_files(archive))
                 elif archive_type == 'pdf':
                     new_book.page_count = archive.page_count
             except NotCompatibleArchive:
+                # Unreadable/corrupt archive - index the file with no page count
                 pass
             books_to_add.append(new_book)
     models.ComicBook.objects.bulk_create(books_to_add)