diff --git a/drivers/include/periph/usbdev.h b/drivers/include/periph/usbdev.h
index 79bc348d63..1845b5e69a 100644
--- a/drivers/include/periph/usbdev.h
+++ b/drivers/include/periph/usbdev.h
@@ -188,6 +188,10 @@ typedef enum {
     /**
      * @brief Transaction fail event.
      *
+     * @deprecated This event is deprecated as only a limited number of devices
+     *             implement and doesn't offer value for upper layer code. This
+     *             event will be removed after the 2022.07 release.
+     *
      * An endpoint should emit this event after a nack reply to the host.
      */
     USBDEV_EVENT_TR_FAIL,