diff --git a/boards/nrf5340dk-app/doc.txt b/boards/nrf5340dk-app/doc.txt
index 22a23c71b7..ed1de742b5 100644
--- a/boards/nrf5340dk-app/doc.txt
+++ b/boards/nrf5340dk-app/doc.txt
@@ -7,7 +7,7 @@
 
 The nRF5340DK is a devboard based on nRF5340 MCU which offers a dual core
 Cortex-M33 with one application core and one network core.
-The network core is able to handle Bluetooth 5.3, BLE, mesh, NFC, Thread and
+The network core is able to handle Bluetooth 5.3, BLE, mesh, NFC (only tag emulation, no reader support), Thread and
 Zigbee connectivity.
 Currently only the application core can be used with RIOT-OS.
 
diff --git a/boards/thingy52/doc.txt b/boards/thingy52/doc.txt
index c70d68c111..77622dd45f 100644
--- a/boards/thingy52/doc.txt
+++ b/boards/thingy52/doc.txt
@@ -4,12 +4,12 @@
 @brief       Support for the Nordic Thingy:52 board
 
 ## Overview
-The Nordic Thingy:52 is a battery powered platform with Bluetooth and NFC
+The Nordic Thingy:52 is a battery powered platform with Bluetooth and NFC (only tag emulation, no reader support)
 radio, a wide range of sensors and some output capabilities.
 
 Components:
 
-- nRF52832 main controller (providing Bluetooth and NFC)
+- nRF52832 main controller (providing Bluetooth and NFC tag emulation)
 - an LIS2DH12 low-power three-axis linear accelerometer
 - an MPU-9250 nine-axis motion sensor
 - an LPS22HB air pressure and temperature sensor