diff --git a/src/saveload/oldloader_sl.cpp b/src/saveload/oldloader_sl.cpp
--- a/src/saveload/oldloader_sl.cpp
+++ b/src/saveload/oldloader_sl.cpp
@@ -25,9 +25,6 @@
 #include "../date_func.h"
 #include "../vehicle_func.h"
 #include "../effectvehicle_base.h"
-#include "../core/mem_func.hpp"
-#include "../core/alloc_type.hpp"
-#include "../engine_base.h"
 #include "../engine_func.h"
 #include "../company_base.h"
 #include "saveload_internal.h"