diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 8dd2afa2fca843d02bca7cb92fe3567934a592e6..237289920f03deb7438cda346fbd54966dd34d80 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -353,8 +353,7 @@ static void kobil_close (struct usb_serial_port *port, struct file *filp)
 		usb_free_urb( port->write_urb );
 		port->write_urb = NULL;
 	}
-	if (port->interrupt_in_urb)
-		usb_kill_urb(port->interrupt_in_urb);
+	usb_kill_urb(port->interrupt_in_urb);
 }