diff --git a/cpu/native/include/socket_zep.h b/cpu/native/include/socket_zep.h
index af12459fc6..bcb945cac8 100644
--- a/cpu/native/include/socket_zep.h
+++ b/cpu/native/include/socket_zep.h
@@ -10,6 +10,9 @@
  * @defgroup    drivers_socket_zep  Socket-based ZEP
  * @ingroup     drivers_netdev
  * @brief       UDP socket-based IEEE 802.15.4 device over ZEP
+ *
+ * @see @ref net_zep for protocol definitions
+ *
  * @{
  *
  * @file
diff --git a/sys/include/net/zep.h b/sys/include/net/zep.h
index 80a317a40e..795f2edce5 100644
--- a/sys/include/net/zep.h
+++ b/sys/include/net/zep.h
@@ -7,12 +7,14 @@
  */
 
 /**
- * @defgroup    net_zep  ZEP header definitions
+ * @defgroup    net_zep  ZigBee Encapsulation Protocol
  * @ingroup     net
+ * @brief       Provides definitions for the ZigBee Encapsulation Protocol (ZEP)
+ *
  * @{
  *
  * @file
- * @brief
+ * @brief       Definitions for the ZigBee Encapsulation Protocol
  *
  * @author  Martine Lenders <m.lenders@fu-berlin.de>
  */