diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index 85a2328..a6e1c9b 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -1467,7 +1467,7 @@
 
 	line = tty->index;
 	sx_dprintk(SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, "
-			"np=%d)\n", current->pid, line, tty,
+			"np=%d)\n", task_pid_nr(current), line, tty,
 			current->signal->tty, sx_nports);
 
 	if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports))