diff --git a/doc/device-api.txt b/doc/device-api.txt
index 1412084..f8cf019 100644
--- a/doc/device-api.txt
+++ b/doc/device-api.txt
If the Alias property is unset, it will reflect
this value which makes it more convenient.
- uint16 Vendor [readonly] [optional]
+ string VendorSource [readonly] [optional]
- Vendor unique numeric identifier.
+ Vendor source numeric identifier.
- uint16 VendorSource [readonly] [optional]
+ Only "bluetooth" and "usb" sources are supported.
- Vendor source numeric identifier.
+ uint16 Vendor [readonly] [optional]
+
+ Vendor unique numeric identifier.
uint16 Product [readonly] [optional]