diff --git a/tests/driver_ccs811/README.md b/tests/driver_ccs811/README.md
index c76e3a40af324218b19dac7fba949782316d95f4..f0dacac690533f78d0a8d7e8e77a9953c6e160fc 100644
--- a/tests/driver_ccs811/README.md
+++ b/tests/driver_ccs811/README.md
@@ -1,15 +1,18 @@
-# About
+# AMS CCS811 device driver test application
+
+## About
 
 This is a manual test application for the CCS811 driver. It shows how the
-sensor can be used for periodic polling as well as with interrupts.
+sensor can be used for periodic polling.
 
-# Usage
+## Usage
 
 The test application demonstrates the use of the CCS811 using
 
-- data-ready status function ```ccs811_data_ready``` to wait for new data and
-- default configuration parameters, that is, the measurement mode
-  ```CCS811_MODE_1S``` with one measurement per second.
+  - data-ready status function ```ccs811_data_ready``` to wait for new data and
+
+  - default configuration parameters, that is, the measurement mode
+    ```CCS811_MODE_1S``` with one measurement per second.
 
 Please refer ```$(RIOTBASE)/tests/driver_ccs811_full``` to learn how
 to use the CCS811 with interrupts.
diff --git a/tests/driver_ccs811_full/README.md b/tests/driver_ccs811_full/README.md
index 003e6622d3fa91499bb09b8eb30dcc0dd744d3cd..997e07841fb65b5696dcbaee89f785c1e8767c1f 100644
--- a/tests/driver_ccs811_full/README.md
+++ b/tests/driver_ccs811_full/README.md
@@ -1,16 +1,21 @@
-# About
+# AMS CCS811 device driver test application
+
+## About
 
 This is a manual test application for the CCS811 driver. It shows how the
-sensor can be used for periodic polling as well as with interrupts.
+sensor can be used with interrupts.
+
+**Please note:** The interrupt pin has to be defined for this test application.
 
-# Usage
+## Usage
 
 The test application demonstrates the use of the CCS811 and pseudomodule
 ```ccs811_full``` using
 
-- data-ready interrupt ```CCS811_INT_DATA_READY``` and
-- default configuration parameters, that is, the measurement mode
-  ```CCS811_MODE_1S``` with one measurement per second.
+  - data-ready interrupt ```CCS811_INT_DATA_READY``` and
+
+  - default configuration parameters, that is, the measurement mode
+    ```CCS811_MODE_1S``` with one measurement per second.
 
 The default configuration parameter for the interrupt pin has to be
 overridden according to the hardware configuration by defining