diff --git a/include/zephyr/usb/usbd.h b/include/zephyr/usb/usbd.h
index 27b684101b1..029741f076d 100644
--- a/include/zephyr/usb/usbd.h
+++ b/include/zephyr/usb/usbd.h
@@ -629,8 +629,11 @@ static inline void *usbd_class_get_private(const struct usbd_class_data *const c
  *
  * This macro defines a descriptor node that, when added to the device context,
  * is automatically used as the serial number string descriptor. A valid serial
- * number is generated from HWID (HWINFO= whenever this string descriptor is
- * requested.
+ * number is obtained from @ref hwinfo_interface whenever this string
+ * descriptor is requested.
+ *
+ * @note The HWINFO driver must be available and the Kconfig option HWINFO
+ *       enabled.
  *
  * @param d_name   String descriptor node identifier.
  */