include stdint.h for integer definitions
include unistd.h for getopt()
diff --git a/ioctl.c b/ioctl.c
index e28f2a4..be0bbd4 100644
--- a/ioctl.c
+++ b/ioctl.c
@@ -6,6 +6,8 @@
 #include <linux/vt.h>
 #include <errno.h>
 #include <pthread.h>
+#include <stdint.h>
+#include <unistd.h>
 
 int ioctl_main(int argc, char *argv[])
 {