diff --git a/cpu/esp_common/doc.md b/cpu/esp_common/doc.md
index 9d7db29a6f..25d27391e2 100644
--- a/cpu/esp_common/doc.md
+++ b/cpu/esp_common/doc.md
@@ -1,5 +1,11 @@
-/**
- * @defgroup    cpu_esp_common ESP Common
- * @brief       Common modules for Espressif ESP SoCs
- * @ingroup     cpu
- */
+<!--
+Copyright (C) 2025 Gunar Schorcht
+
+This file is subject to the terms and conditions of the GNU Lesser
+General Public License v2.1. See the file LICENSE in the top level
+directory for more details.
+-->
+
+@defgroup    cpu_esp_common ESP Common
+@brief       Common modules for Espressif ESP SoCs
+@ingroup     cpu