diff --git a/sys/include/net/credman.h b/sys/include/net/credman.h
index 527441dc21..86b30d0579 100644
--- a/sys/include/net/credman.h
+++ b/sys/include/net/credman.h
@@ -34,12 +34,18 @@
 extern "C" {
 #endif
 
+/**
+ * @defgroup net_credman_conf (D)TLS Credential Manager compile configurations
+ * @ingroup config
+ * @{
+ */
 /**
  * @brief Maximum number of credentials in credential pool
  */
 #ifndef CONFIG_CREDMAN_MAX_CREDENTIALS
 #define CONFIG_CREDMAN_MAX_CREDENTIALS  (2)
 #endif
+/** @} */
 
 /**
  * @brief Buffer of the credential