diff --git a/tools/rpi/discover/README.md b/tools/rpi/discover/README.md
index 955a7d30..6f92adf8 100644
--- a/tools/rpi/discover/README.md
+++ b/tools/rpi/discover/README.md
@@ -5,3 +5,8 @@ This tool will continuously scan all channels.
 Requires NRF24 library from https://github.com/nRF24/RF24/ and an NRF24
 module connected to the Raspberry Pi's GPIO header as described in
 https://nrf24.github.io/RF24/index.html.
+
+UPDATE: Note that this tool relies on the NRF24's AutoAck functionality.
+It has since been conclusively proven that the inverters do not enable
+AutoAck. Therefore this tool works quite well for discovering NRF24s,
+just not the ones build into the inverters :-(