--- a/src/map.cpp	Tue Dec 25 09:48:53 2007 +0000
+++ b/src/map.cpp	Tue Dec 25 11:26:07 2007 +0000
@@ -5,11 +5,11 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "debug.h"
-#include "functions.h"
 #include "map.h"
 #include "direction_func.h"
 #include "core/bitmath_func.hpp"
 #include "core/alloc_func.hpp"
+#include "core/math_func.hpp"
 
 #if defined(_MSC_VER) && _MSC_VER >= 1400 /* VStudio 2005 is stupid! */
 /* Why the hell is that not in all MSVC headers?? */