diff --git a/video_xblock/tests/unit/test_video_xblock.py b/video_xblock/tests/unit/test_video_xblock.py
index f4ab9b48..3239bb1b 100644
--- a/video_xblock/tests/unit/test_video_xblock.py
+++ b/video_xblock/tests/unit/test_video_xblock.py
@@ -124,7 +124,7 @@ def test_student_view(self, route_transcripts, resource_string_mock, render_reso
         render_resource_mock.return_value = u'<iframe/>'
         handler_url = self.xblock.runtime.handler_url = Mock()
         handler_url.side_effect = ['/player/url', '/transcript/download/url']
-        route_transcripts.return_value = 'transcripts.vtt'
+        route_transcripts.return_value = ['transcripts.vtt']
         self.xblock.get_transcript_download_link = Mock(return_value='/transcript/link.vtt')
         self.xblock.threeplaymedia_streaming = True
 
@@ -143,7 +143,7 @@ def test_student_view(self, route_transcripts, resource_string_mock, render_reso
             handout_file_name='',
             player_url='/player/url',
             transcript_download_link='/transcript/download/url'+'/transcript/link.vtt',
-            transcripts='transcripts.vtt',
+            transcripts=['transcripts.vtt'],
             usage_id='usage_id',
             version=__version__,
         )
diff --git a/video_xblock/video_xblock.py b/video_xblock/video_xblock.py
index 1162d016..56118424 100644
--- a/video_xblock/video_xblock.py
+++ b/video_xblock/video_xblock.py
@@ -311,7 +311,7 @@ def student_view(self, _context=None):
             'display_name': self.display_name,
             'usage_id': self.usage_id,
             'handout': self.handout,
-            'transcripts': self.route_transcripts(),
+            'transcripts': list(self.route_transcripts()),
             'download_transcript_allowed': self.download_transcript_allowed,
             'transcripts_streaming_enabled': self.threeplaymedia_streaming,
             'download_video_url': self.get_download_video_url(),