diff --git a/include/chainbase/chainbase.hpp b/include/chainbase/chainbase.hpp
index ebb1fdca843..7ce93bc5cd7 100644
--- a/include/chainbase/chainbase.hpp
+++ b/include/chainbase/chainbase.hpp
@@ -1037,9 +1037,11 @@ namespace chainbase {
 
          bfs::path                                                   _data_dir;
 
+#ifdef CHAINBASE_CHECK_LOCKING
          int32_t                                                     _read_lock_count = 0;
          int32_t                                                     _write_lock_count = 0;
          bool                                                        _enable_require_locking = false;
+#endif
 
          void                                                        _msync_database();
    };