diff --git a/get_peertube_videos/get_peertube_videos.py b/get_peertube_videos/get_peertube_videos.py
index 2afeb1a..aca2ab9 100644
--- a/get_peertube_videos/get_peertube_videos.py
+++ b/get_peertube_videos/get_peertube_videos.py
@@ -153,6 +153,8 @@ class GetPeertubeVideos:
                     with open(full_thumb_file_name, mode='wb') as thumb_file:
                         thumb_file.write(thumb_bytes)
                     self._add_thumbnail_to_video(full_file_name, full_thumb_file_name)
+                self.downloaded_items.append(item['id'])
+                self._write_downloaded_items()
         else:
             self._log.debug(
                 "Item already downloaded, skipping."
@@ -195,6 +197,7 @@ class GetPeertubeVideos:
                 result.stdout,
                 result.stderr
             )
+            return None
         os.remove(video_file)
         os.rename(f"{video_file}_with_thumb.{file_extension}", video_file)