diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index ed6c4e4d960a0dfd7e5da4bfe513205f518af89f..2c120b63429557265f3c652d50097a57f5da8f9f 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -50,6 +50,7 @@
 #include <linux/uaccess.h>
 #include <linux/module.h>
 #include <linux/ratelimit.h>
+#include <linux/vmalloc.h>
 
 
 /* number of characters left in xmit buffer before select has we have room */