diff --git a/src/Client.hh b/src/Client.hh
index c08590e7..48168e9a 100644
--- a/src/Client.hh
+++ b/src/Client.hh
@@ -217,7 +217,7 @@ public:
   uint16_t card_battle_table_seat_number;
   uint16_t card_battle_table_seat_state;
   std::weak_ptr<Episode3::Tournament::Team> ep3_tournament_team;
-  std::shared_ptr<Episode3::BattleRecord> ep3_prev_battle_record;
+  std::shared_ptr<const Episode3::BattleRecord> ep3_prev_battle_record;
   std::shared_ptr<const Menu> last_menu_sent;
   uint32_t last_game_info_requested;
   struct JoinCommand {