diff -ur netwmpager-2.04.orig/main.c netwmpager-2.04/main.c
--- netwmpager-2.04.orig/main.c	2012-02-12 10:00:41.000000000 +0200
+++ netwmpager-2.04/main.c	2012-11-19 09:16:22.199658107 +0200
@@ -30,6 +30,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <dirent.h>
+#include <unistd.h>
 
 char *program_name = NULL;
 char config_filename[256];