diff --git a/include/sys/ioctl.h b/include/sys/ioctl.h
index 372e3ddc..c2ce3b48 100644
--- a/include/sys/ioctl.h
+++ b/include/sys/ioctl.h
@@ -4,6 +4,7 @@
 extern "C" {
 #endif
 
+#include <bits/alltypes.h>
 #include <bits/ioctl.h>
 
 #define N_TTY           0