--- a/projects/openttd_vs90.vcproj	Wed Nov 21 19:18:34 2007 +0000
+++ b/projects/openttd_vs90.vcproj	Thu Nov 22 18:01:51 2007 +0000
@@ -797,6 +797,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\core\math_func.hpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\core\random_func.hpp"
 				>
 			</File>