diff --git a/boards/common/stm32/doc.txt b/boards/common/stm32/doc.txt
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+/*
+ * Copyright (C) 2018 Freie Universität Berlin
+ *
+ * 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    boards_common_stm32 STM32 Configuration Snippets
+ * @ingroup     boards_common
+ * @brief       Board configuration snippets for STM32-based boards
+ *
+ * All boards using a CPU from the STM32 family share certain parts of their
+ * configuration. This module provides a collection of fine grained
+ * configuration snippets that can be reused for different boards.
+ */