diff --git a/supysonic/api/media.py b/supysonic/api/media.py
index b0d4dfe..dc05c0b 100644
--- a/supysonic/api/media.py
+++ b/supysonic/api/media.py
@@ -159,13 +159,13 @@ def cover_art():
     size_path = os.path.join(app.config['WEBAPP']['cache_dir'], str(size))
     path = os.path.abspath(os.path.join(size_path, str(res.id)))
     if os.path.exists(path):
-        return send_file(path)
+        return send_file(path, mimetype = 'image/jpeg')
     if not os.path.exists(size_path):
         os.makedirs(size_path)
 
     im.thumbnail([size, size], Image.ANTIALIAS)
     im.save(path, 'JPEG')
-    return send_file(path)
+    return send_file(path, mimetype = 'image/jpeg')
 
 @app.route('/rest/getLyrics.view', methods = [ 'GET', 'POST' ])
 def lyrics():
diff --git a/tests/api/test_media.py b/tests/api/test_media.py
index 12701f4..e45ef96 100644
--- a/tests/api/test_media.py
+++ b/tests/api/test_media.py
@@ -102,7 +102,6 @@ class MediaTestCase(ApiTestBase):
         self.assertEqual(im.format, 'JPEG')
         self.assertEqual(im.size, (420, 420))
 
-        self.skipTest("config dependant test, config isn't test proof")
         args['size'] = 120
         rv = self.client.get('/rest/getCoverArt.view', query_string = args)
         self.assertEqual(rv.status_code, 200)
@@ -111,6 +110,14 @@ class MediaTestCase(ApiTestBase):
         self.assertEqual(im.format, 'JPEG')
         self.assertEqual(im.size, (120, 120))
 
+        # rerequest, just in case
+        rv = self.client.get('/rest/getCoverArt.view', query_string = args)
+        self.assertEqual(rv.status_code, 200)
+        self.assertEqual(rv.mimetype, 'image/jpeg')
+        im = Image.open(BytesIO(rv.data))
+        self.assertEqual(im.format, 'JPEG')
+        self.assertEqual(im.size, (120, 120))
+
         # TODO test non square covers
 
     def test_get_lyrics(self):
@@ -129,7 +136,6 @@ class MediaTestCase(ApiTestBase):
         # Local file
         rv, child = self._make_request('getLyrics', { 'artist': 'artist', 'title': '23bytes' }, tag = 'lyrics')
         self.assertIn('null', child.text)
-        print child
 
     def test_get_avatar(self):
         self._make_request('getAvatar', error = 0)