1 files changed, 1 insertions, 0 deletions
diff --git a/engine.h b/engine.h
index 3f3ff5507..be8e21aa7 100644
--- a/engine.h
+++ b/engine.h
@@ -16,6 +16,7 @@ typedef struct RailVehicleInfo {
 	uint16 power;
 	uint16 weight;
 	byte running_cost_base;
+	byte running_cost_class;
 	byte engclass; // 0: steam, 1: diesel, 2: electric
 	byte capacity;
 	byte cargo_type;