diff --git a/tests/mpd/protocol/test_music_db.py b/tests/mpd/protocol/test_music_db.py
index e6712fef..ff39c081 100644
--- a/tests/mpd/protocol/test_music_db.py
+++ b/tests/mpd/protocol/test_music_db.py
@@ -139,6 +139,7 @@ class MusicDatabaseHandlerTest(protocol.BaseTestCase):
             'dummy:/': [Ref.track(uri='dummy:/a', name='a'),
                         Ref.directory(uri='dummy:/foo', name='foo'),
                         Ref.album(uri='dummy:/album', name='album'),
+                        Ref.artist(uri='dummy:/artist', name='artist'),
                         Ref.playlist(uri='dummy:/pl', name='pl')],
             'dummy:/foo': [Ref.track(uri='dummy:/foo/b', name='b')]}
 
@@ -147,6 +148,7 @@ class MusicDatabaseHandlerTest(protocol.BaseTestCase):
         self.assertInResponse('file: dummy:/a')
         self.assertInResponse('directory: /dummy/foo')
         self.assertInResponse('directory: /dummy/album')
+        self.assertInResponse('directory: /dummy/artist')
         self.assertInResponse('directory: /dummy/pl')
         self.assertInResponse('file: dummy:/foo/b')
         self.assertInResponse('OK')
@@ -207,6 +209,7 @@ class MusicDatabaseHandlerTest(protocol.BaseTestCase):
             'dummy:/': [Ref.track(uri='dummy:/a', name='a'),
                         Ref.directory(uri='dummy:/foo', name='foo'),
                         Ref.album(uri='dummy:/album', name='album'),
+                        Ref.artist(uri='dummy:/artist', name='artist'),
                         Ref.playlist(uri='dummy:/pl', name='pl')],
             'dummy:/foo': [Ref.track(uri='dummy:/foo/b', name='b')]}
 
@@ -216,6 +219,7 @@ class MusicDatabaseHandlerTest(protocol.BaseTestCase):
         self.assertInResponse('Title: a')
         self.assertInResponse('directory: /dummy/foo')
         self.assertInResponse('directory: /dummy/album')
+        self.assertInResponse('directory: /dummy/artist')
         self.assertInResponse('directory: /dummy/pl')
         self.assertInResponse('file: dummy:/foo/b')
         self.assertInResponse('Title: b')