diff --git a/server/objects/PlaybackSession.js b/server/objects/PlaybackSession.js
index ba031b665..ace0256e8 100644
--- a/server/objects/PlaybackSession.js
+++ b/server/objects/PlaybackSession.js
@@ -110,7 +110,8 @@ class PlaybackSession {
       startedAt: this.startedAt,
       updatedAt: this.updatedAt,
       audioTracks: this.audioTracks.map((at) => at.toJSON?.() || { ...at }),
-      libraryItem: libraryItem?.toOldJSONExpanded() || null
+      libraryItem: libraryItem?.toOldJSONExpanded() || null,
+      coverAspectRatio: this.coverAspectRatio !== null ? this.coverAspectRatio : undefined // Used for share sessions
     }
   }