diff --git a/README.md b/README.md
index 8b7fd25..a1460e1 100644
--- a/README.md
+++ b/README.md
@@ -90,8 +90,5 @@ connect the power meter UART port using a USB to UART converter.
 TODO
 ====
 
-arduino_nano:
-- use encryption for the RF communication (AES-128)
-
 rpi:
 - provide influxdb hostname, username, and password as parameter