diff --git a/README.md b/README.md
index 3baf37a..3af7027 100644
--- a/README.md
+++ b/README.md
@@ -135,3 +135,10 @@ XXX Appears to include non-free "5-Clause Nordic License". `:|`
 * Non-free code gets pulled in via this build script:
 `micropython/ports/nrf/drivers/bluetooth/download_ble_stack.sh`
 
+* In `micropython/ports/nrf/drivers/bluetooth/`
+
+```
+4. This software, with or without modification, must only be used with a
+   Nordic Semiconductor ASA integrated circuit.
+```
+