diff --git a/src/newgrf_engine.cpp b/src/newgrf_engine.cpp
--- a/src/newgrf_engine.cpp
+++ b/src/newgrf_engine.cpp
@@ -16,15 +16,12 @@
 #include "company_func.h"
 #include "newgrf.h"
 #include "newgrf_cargo.h"
-#include "newgrf_engine.h"
 #include "newgrf_spritegroup.h"
 #include "date_func.h"
 #include "vehicle_func.h"
 #include "core/random_func.hpp"
 #include "aircraft.h"
-#include "core/smallmap_type.hpp"
 #include "station_base.h"
-#include "engine_base.h"
 #include "company_base.h"
 #include "newgrf_railtype.h"