diff --git a/resources/lib/playback_decision.py b/resources/lib/playback_decision.py
index 3622e5be..4e77f15b 100644
--- a/resources/lib/playback_decision.py
+++ b/resources/lib/playback_decision.py
@@ -341,7 +341,8 @@ def audio_subtitle_prefs(api, item):
     if item.playmethod != v.PLAYBACK_METHOD_TRANSCODE:
         LOG.debug('Telling PMS we are not burning in any subtitles')
         args = {
-            'subtitleStreamID': 0
+            'subtitleStreamID': 0,
+            'allParts': 1
         }
         DU().downloadUrl('{server}/library/parts/%s' % part_id,
                          action_type='PUT',
@@ -456,7 +457,8 @@ def setup_transcoding_audio_subtitle_prefs(mediastreams, part_id):
                 select_subs_index = subtitle_streams_list[resp - 1]
     # Now prep the PMS for our choice
     args = {
-        'subtitleStreamID': select_subs_index
+        'subtitleStreamID': select_subs_index,
+        'allParts': 1
     }
     DU().downloadUrl('{server}/library/parts/%s' % part_id,
                      action_type='PUT',