diff --git a/libc/kernel/uapi/linux/tty.h b/libc/kernel/uapi/linux/tty.h
index 9a09303..48fa908 100644
--- a/libc/kernel/uapi/linux/tty.h
+++ b/libc/kernel/uapi/linux/tty.h
@@ -45,4 +45,6 @@
 #define N_TRACESINK 23
 #define N_TRACEROUTER 24
 #define N_NCI 25
+#define N_SPEAKUP 26
+#define N_NULL 27
 #endif