diff --git a/tubesync/sync/models.py b/tubesync/sync/models.py
index e5c9221..356e779 100644
--- a/tubesync/sync/models.py
+++ b/tubesync/sync/models.py
@@ -18,7 +18,7 @@ from common.utils import clean_filename
 from .youtube import (get_media_info as get_youtube_media_info,
                       download_media as download_youtube_media)
 from .utils import seconds_to_timestr, parse_media_format
-from .matching import (get_best_combined_format, get_best_audio_format, 
+from .matching import (get_best_combined_format, get_best_audio_format,
                        get_best_video_format)
 from .mediaservers import PlexMediaServer
 from .fields import CommaSepChoiceField
@@ -107,7 +107,6 @@ class Source(models.Model):
     EXTENSION_MKV = 'mkv'
     EXTENSIONS = (EXTENSION_M4A, EXTENSION_OGG, EXTENSION_MKV)
 
-
     # as stolen from: https://wiki.sponsor.ajay.app/w/Types / https://github.com/yt-dlp/yt-dlp/blob/master/yt_dlp/postprocessor/sponsorblock.py
     SPONSORBLOCK_CATEGORIES_CHOICES = (
         ('sponsor', 'Sponsor'),
@@ -121,15 +120,14 @@ class Source(models.Model):
     )
 
     sponsorblock_categories = CommaSepChoiceField(
-            _(''),
-            possible_choices=SPONSORBLOCK_CATEGORIES_CHOICES,
-            all_choice="all",
-            allow_all=True,
-            all_label="(all options)",
-            default="all",
-            help_text=_("Select the sponsorblocks you want to enforce")
-        )
-
+        _(''),
+        possible_choices=SPONSORBLOCK_CATEGORIES_CHOICES,
+        all_choice='all',
+        allow_all=True,
+        all_label='(all options)',
+        default='all',
+        help_text=_('Select the sponsorblocks you want to enforce')
+    )
     embed_metadata = models.BooleanField(
         _('embed metadata'),
         default=False,
@@ -140,14 +138,12 @@ class Source(models.Model):
         default=False,
         help_text=_('Embed thumbnail into the file')
     )
-
     enable_sponsorblock = models.BooleanField(
         _('enable sponsorblock'),
         default=True,
         help_text=_('Use SponsorBlock?')
     )
 
-
     # Fontawesome icons used for the source on the front end
     ICONS = {
         SOURCE_TYPE_YOUTUBE_CHANNEL: '<i class="fab fa-youtube"></i>',
@@ -1390,8 +1386,8 @@ class Media(models.Model):
                                     f'no valid format available')
         # Download the media with youtube-dl
         download_youtube_media(self.url, format_str, self.source.extension,
-                               str(self.filepath), self.source.write_json, 
-                               self.source.sponsorblock_categories, self.source.embed_thumbnail,
+                               str(self.filepath), self.source.write_json,
+                               self.source.sponsorblock_categories.selected_choices, self.source.embed_thumbnail,
                                self.source.embed_metadata, self.source.enable_sponsorblock,
                               self.source.write_subtitles, self.source.auto_subtitles,self.source.sub_langs )
         # Return the download paramaters
diff --git a/tubesync/sync/youtube.py b/tubesync/sync/youtube.py
index 4ac6e83..bf3e9f5 100644
--- a/tubesync/sync/youtube.py
+++ b/tubesync/sync/youtube.py
@@ -1,5 +1,5 @@
 '''
-    Wrapper for the youtube-dl library. Used so if there are any library interface
+    Wrapper for the yt-dlp library. Used so if there are any library interface
     updates we only need to udpate them in one place.
 '''
 
@@ -64,9 +64,9 @@ def get_media_info(url):
     return response
 
 
-def download_media(url, media_format, extension, output_file, info_json, 
-                   sponsor_categories="all", 
-                   embed_thumbnail=False, embed_metadata=False, skip_sponsors=True, 
+def download_media(url, media_format, extension, output_file, info_json,
+                   sponsor_categories=None,
+                   embed_thumbnail=False, embed_metadata=False, skip_sponsors=True,
                    write_subtitles=False, auto_subtitles=False, sub_langs='en'):
     '''
         Downloads a YouTube URL to a file on disk.
@@ -74,7 +74,7 @@ def download_media(url, media_format, extension, output_file, info_json,
 
     def hook(event):
         filename = os.path.basename(event['filename'])
-    
+
         if event.get('downloaded_bytes') is None or event.get('total_bytes') is None:
             return None
 
@@ -106,8 +106,8 @@ def download_media(url, media_format, extension, output_file, info_json,
                      f'{total_size_str} in {elapsed_str}')
         else:
             log.warn(f'[youtube-dl] unknown event: {str(event)}')
-    hook.download_progress = 0
 
+    hook.download_progress = 0
     ytopts = {
         'format': media_format,
         'merge_output_format': extension,
@@ -120,7 +120,8 @@ def download_media(url, media_format, extension, output_file, info_json,
         'writeautomaticsub': auto_subtitles,
         'subtitleslangs': sub_langs.split(','),
     }
-    
+    if not sponsor_categories:
+        sponsor_categories = []
     sbopt = {
         'key': 'SponsorBlock',
         'categories': [sponsor_categories]
@@ -130,7 +131,6 @@ def download_media(url, media_format, extension, output_file, info_json,
         'add_chapters': True,
         'add_metadata': True
     }
-
     opts = get_yt_opts()
     if embed_thumbnail:
         ytopts['postprocessors'].append({'key': 'EmbedThumbnail'})
@@ -138,11 +138,9 @@ def download_media(url, media_format, extension, output_file, info_json,
         ffmdopt["add_metadata"] = True
     if skip_sponsors:
         ytopts['postprocessors'].append(sbopt)
-    
     ytopts['postprocessors'].append(ffmdopt)
-        
     opts.update(ytopts)
-        
+
     with yt_dlp.YoutubeDL(opts) as y:
         try:
             return y.download([url])