diff --git a/src/rupert/ripper.py b/src/rupert/ripper.py
index 89e66eb..b0af6a1 100644
--- a/src/rupert/ripper.py
+++ b/src/rupert/ripper.py
@@ -352,10 +352,13 @@ class Ripper:
         self._status_queue.put((None, (message, is_err)))
 
     def fetch_album_art(self) -> None:
+        assert self.release
+        assert Image
         try:
             data = fetch_album_art(self.release)
         except AlbumArtNotFound:
             log.error('No album art found for %s', self.release.title)
+            return
         buf = io.BytesIO(data)
         img = Image.open(buf)
         img.thumbnail((1000, 1000))