diff --git a/test/test_mediafile.py b/test/test_mediafile.py
index 961d3d3bd..580584791 100644
--- a/test/test_mediafile.py
+++ b/test/test_mediafile.py
@@ -350,6 +350,7 @@ class ReadWriteTestBase(ArtTestMixin, GenreListTestMixin,
         'genre',
         'lyricist',
         'composer',
+        'composer_sort',
         'arranger',
         'grouping',
         'year',