diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 892020d48555..2f6f1523ec56 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -757,7 +757,7 @@ static int __init sierra_init(void)
 
 static void __exit sierra_exit(void)
 {
-	usb_deregister (&sierra_driver);
+	usb_deregister(&sierra_driver);
 	usb_serial_deregister(&sierra_device);
 }