diff --git a/boards/nucleo-f031k6/doc.txt b/boards/nucleo-f031k6/doc.md
similarity index 86%
rename from boards/nucleo-f031k6/doc.txt
rename to boards/nucleo-f031k6/doc.md
index dd7d4b6cac..5c5620bf8f 100644
--- a/boards/nucleo-f031k6/doc.txt
+++ b/boards/nucleo-f031k6/doc.md
@@ -1,7 +1,6 @@
-/**
- * @defgroup    boards_nucleo-f031k6 STM32 Nucleo-F031K6
- * @ingroup     boards_common_nucleo32
- * @brief       Support for the STM32 Nucleo-F031K6
+@defgroup    boards_nucleo-f031k6 STM32 Nucleo-F031K6
+@ingroup     boards_common_nucleo32
+@brief       Support for the STM32 Nucleo-F031K6
 
 ## Overview
 
@@ -25,4 +24,3 @@ make BOARD=nucleo-f031k6 PROGRAMMER=cpy2remed flash
 @note This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates
       can be found on [this STM webpage](https://www.st.com/en/development-tools/stsw-link007.html).
 
- */