diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 366af83..fa80af3 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -603,7 +603,7 @@
  *		BTM
  *		  redirect lock for undoing redirection
  *		  file list lock for manipulating list of ttys
- *		  tty_ldisc_lock from called functions
+ *		  tty_ldiscs_lock from called functions
  *		  termios_mutex resetting termios data
  *		  tasklist_lock to walk task list for hangup event
  *		    ->siglock to protect ->signal/->sighand
@@ -2202,7 +2202,7 @@
  *	FIXME: does not honour flow control ??
  *
  *	Locking:
- *		Called functions take tty_ldisc_lock
+ *		Called functions take tty_ldiscs_lock
  *		current->signal->tty check is safe without locks
  *
  *	FIXME: may race normal receive processing