--- screen-4.2.1.orig/sched.h	2014-04-26 12:58:35.000000000 +0200
+++ screen-4.2.1/sched.h	2014-05-01 13:04:48.000000000 +0200
@@ -27,6 +27,11 @@
  * $Id$ GNU
  */
 
+#ifndef __SCHED_H
+#define __SCHED_H
+
+#include <sys/time.h>
+
 struct event
 {
   struct event *next;
@@ -46,3 +51,5 @@ struct event
 #define EV_READ		1
 #define EV_WRITE	2
 #define EV_ALWAYS	3
+
+#endif