diff --git a/engine.h b/engine.h
--- a/engine.h
+++ b/engine.h
@@ -143,16 +143,16 @@ bool IsEngineBuildable(uint engine, byte
 
 enum {
 	NUM_NORMAL_RAIL_ENGINES = 54,
-	NUM_MONORAIL_ENGINES = 30,
-	NUM_MAGLEV_ENGINES = 32,
-	NUM_TRAIN_ENGINES = NUM_NORMAL_RAIL_ENGINES + NUM_MONORAIL_ENGINES + NUM_MAGLEV_ENGINES,
-	NUM_ROAD_ENGINES = 88,
-	NUM_SHIP_ENGINES = 11,
-	NUM_AIRCRAFT_ENGINES = 41,
-	TOTAL_NUM_ENGINES = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES + NUM_AIRCRAFT_ENGINES,
-	AIRCRAFT_ENGINES_INDEX = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES,
-	SHIP_ENGINES_INDEX = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES,
-	ROAD_ENGINES_INDEX = NUM_TRAIN_ENGINES,
+	NUM_MONORAIL_ENGINES    = 30,
+	NUM_MAGLEV_ENGINES      = 32,
+	NUM_TRAIN_ENGINES       = NUM_NORMAL_RAIL_ENGINES + NUM_MONORAIL_ENGINES + NUM_MAGLEV_ENGINES,
+	NUM_ROAD_ENGINES        = 88,
+	NUM_SHIP_ENGINES        = 11,
+	NUM_AIRCRAFT_ENGINES    = 41,
+	TOTAL_NUM_ENGINES       = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES + NUM_AIRCRAFT_ENGINES,
+	AIRCRAFT_ENGINES_INDEX  = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES,
+	SHIP_ENGINES_INDEX      = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES,
+	ROAD_ENGINES_INDEX      = NUM_TRAIN_ENGINES,
 };
 VARDEF Engine _engines[TOTAL_NUM_ENGINES];
 #define FOR_ALL_ENGINES(e) for (e = _engines; e != endof(_engines); e++)