diff --git a/gadget-code/src/lib/socket-session.ts b/gadget-code/src/lib/socket-session.ts
index 77b6bdb..8e58780 100644
--- a/gadget-code/src/lib/socket-session.ts
+++ b/gadget-code/src/lib/socket-session.ts
@@ -57,7 +57,7 @@ export abstract class SocketSession {
   async onSocketDisconnect(): Promise<void> {
     this.log.info("socket disconnected", {
       id: this.socket.id,
-      user: this.user,
+      userId: this.user._id,
     });
   }
 }