diff --git a/sys/auto_init/saul/doc.txt b/sys/auto_init/saul/doc.txt
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+/*
+ * Copyright (C) 2018 HAW Hamburg
+ *
+ * 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 auto_init_saul SAUL Auto Initialisation
+ * @ingroup drivers_saul
+ * @brief Auto initialisation of SAUL enabled drivers
+ *
+ * This module contains auto init functions for drivers that support SAUL.
+ */