diff --git a/README.md b/README.md
index 026bb14..278e1c2 100644
--- a/README.md
+++ b/README.md
@@ -7,14 +7,15 @@ Clone this repository, then :
 ```sh
 mbed deploy
 mbed config root .
-# set the compiler
+# set the desired compiler
 mbed toolchain GCC_ARM
-# set the board
+# set the desired board
 mbed target NUCLEO_L073RZ
-# set-up gcc arm path if needed (or any compiler you choose as toolchain)
+# set-up the compiler path if needed
 mbed config -G GCC_ARM_PATH /opt/gcc-arm-none-eabi-7-2017-q4-major/bin
+cp mbed_app.json.sample mbed_app.json
 # modify lora.device-eui, lora.application-eui and lora.application-key in mbed_app.json
-mbed compile --profile mbed-os/tools/profiles/release.json
+mbed compile --profile minimal-printf/profiles/release.json
 ```
 
 Then you can use stm32flash or - may be better - a stlink interface to copy the generated .bin file onto the RAK811.