1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 1a2222cbb805..b4d4522e5071 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1592,7 +1592,7 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp)
         int retval, line;
 
         line = tty->index;
-        if (line < 0 || line > ISDN_MAX_CHANNELS)
+        if (line < 0 || line >= ISDN_MAX_CHANNELS)
                 return -ENODEV;
         info = &dev->mdm.info[line];
         if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))