diff --git a/README.md b/README.md
index 71fddc1..584cd3c 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,14 @@
 # huafetcher
 
-Kivy GUI for huami-token. Works on desktop and as Android apk. Downloads key and aGPS data, unzips it into `/storage/emulated/0`
+Kivy GUI for huami-token. Works on desktop and as Android apk. Downloads key
+and aGPS data, unzips it into `/storage/emulated/0`
 
 [huami-token](https://github.com/argrento/huami-token): all credits to the original author
 
+To be able to get a key from huami servers, the band/watch must be paired with
+the original app at least once. Follow instructions in [Gadgetbridge
+wiki](https://codeberg.org/Freeyourgadget/Gadgetbridge/wiki/Huami-Server-Pairing#server-based-pairing).
+
 <img src="screenshots/screenshot1.jpg" width="300" alt="screenshot" />
 <img src="screenshots/screenshot2.jpg" width="300" alt="screenshot" />