--- openafs-1.6.5.orig/src/auth/userok.c	2013-07-18 00:10:42.000000000 +0200
+++ openafs-1.6.5/src/auth/userok.c	2013-09-14 15:59:14.673703295 +0200
@@ -19,6 +19,7 @@
 #include <fcntl.h>
 #include <io.h>
 #else
+#include <fcntl.h>
 #include <sys/file.h>
 #include <netinet/in.h>
 #include <netdb.h>