diff --git a/titles/chuni/base.py b/titles/chuni/base.py
index 37bcbb3..5ac997c 100644
--- a/titles/chuni/base.py
+++ b/titles/chuni/base.py
@@ -465,7 +465,7 @@ class ChuniBase:
                 for d in details_iter
             ]
 
-            music_list.append({"musicId": music_id, "length": len(details), "userMusicDetailList": details})
+            music_list.append({"musicId": music_id, "length": len(details), "userRivalMusicDetailList": details})
             returned_music_details_count += len(details)
 
             if len(music_list) >= max_ct: