diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 73b8e05..64bda13 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -597,6 +597,7 @@
 	kfifo_free(&port->write_fifo);
 	kfree(port->interrupt_in_buffer);
 	kfree(port->interrupt_out_buffer);
+	tty_port_destroy(&port->port);
 	kfree(port);
 }