diff --git a/lib/media/segment_index.js b/lib/media/segment_index.js
index bad96a0343..544d9bd7b9 100644
--- a/lib/media/segment_index.js
+++ b/lib/media/segment_index.js
@@ -363,6 +363,8 @@ shaka.media.SegmentIndex = class {
             lastReference.status,
             lastReference.hlsAes128Key,
         );
+    this.references[this.references.length - 1].discontinuitySequence =
+        lastReference.discontinuitySequence;
   }