diff -Naur openttd-1.1.1.orig/src/fileio.cpp openttd-1.1.1/src/fileio.cpp
--- openttd-1.1.1.orig/src/fileio.cpp	2011-05-15 18:06:13.000000000 +0000
+++ openttd-1.1.1/src/fileio.cpp	2011-07-23 22:29:59.000000000 +0000
@@ -21,9 +21,7 @@
 #include <Path.h>
 #include <storage/FindDirectory.h>
 #else
-#if defined(OPENBSD) || defined(DOS)
 #include <unistd.h>
-#endif
 #include <pwd.h>
 #endif
 #include <sys/stat.h>