diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index b9e376c8e2e36afa6fa7c7f172470b77033627e8..47fe4c5449c993337bb2cfab183d3cc2eac3307d 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -456,8 +456,8 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 
 		usb_pcwd_keepalive(usb_pcwd_device);
-		/* Fall */
 	}
+		/* fall through */
 
 	case WDIOC_GETTIMEOUT:
 		return put_user(heartbeat, p);