diff --git a/crates/lavina-core/src/room.rs b/crates/lavina-core/src/room.rs
index 559cd23..b7dfa20 100644
--- a/crates/lavina-core/src/room.rs
+++ b/crates/lavina-core/src/room.rs
@@ -160,7 +160,7 @@ impl RoomHandle {
         if !lock.storage.is_room_member(room_storage_id, player_storage_id).await.unwrap() {
             lock.storage.add_room_member(room_storage_id, player_storage_id).await.unwrap();
         } else {
-            tracing::warn!("User {} has already been added to the room.", player_id);
+            tracing::warn!("User {:#?} has already been added to the room.", player_id);
         }
         lock.members.insert(player_id.clone());
         let update = Updates::RoomJoined {