diff --git a/src/openttd.h b/src/openttd.h
--- a/src/openttd.h
+++ b/src/openttd.h
@@ -8,7 +8,6 @@
 #define VARDEF extern
 #endif
 
-#include "hal.h"
 #include "helpers.hpp"
 
 struct Oblong {