diff --git a/include/linux/tty.h b/include/linux/tty.h
index 5824a9777ad7d39cc13a67910936cafbb2cce178..dd8e08fe88551a3d9c9ca2529226bfa55631e69b 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -53,13 +53,6 @@
  */
 #define __DISABLED_CHAR '\0'
 
-/*
- * This is the flip buffer used for the tty driver.  The buffer is
- * located in the tty structure, and is used as a high speed interface
- * between the tty driver and the tty line discipline.
- */
-#define TTY_FLIPBUF_SIZE 512
-
 struct tty_buffer {
 	struct tty_buffer *next;
 	char *char_buf_ptr;