diff --git a/doc/doxygen/main_page.h b/doc/doxygen/main_page.h
index 6486a17d..db9c81e4 100644
--- a/doc/doxygen/main_page.h
+++ b/doc/doxygen/main_page.h
@@ -49,7 +49,7 @@
  * Porting: implement all functions in @ref sys_time and @ref sys_prot.\n
  * You can only use @ref callbackstyle_api in this mode.\n
  * Sample code:\n
- * @verbinclude NO_SYS_SampleCode.c
+ * @include NO_SYS_SampleCode.c
  */
 
 /**
diff --git a/src/include/lwip/igmp.h b/src/include/lwip/igmp.h
index ba9986b2..58c34fc3 100644
--- a/src/include/lwip/igmp.h
+++ b/src/include/lwip/igmp.h
@@ -99,7 +99,9 @@ err_t  igmp_leavegroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr);
 err_t  igmp_leavegroup_netif(struct netif *netif, const ip4_addr_t *groupaddr);
 void   igmp_tmr(void);
 
-/* Get list of IGMP groups for netif */
+/** @ingroup igmp 
+ * Get list head of IGMP groups for netif
+ */
 #define netif_igmp_data(netif) ((struct igmp_group *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP))
 
 #ifdef __cplusplus
diff --git a/src/include/lwip/mld6.h b/src/include/lwip/mld6.h
index eebab250..1c724c02 100644
--- a/src/include/lwip/mld6.h
+++ b/src/include/lwip/mld6.h
@@ -82,7 +82,9 @@ err_t  mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
 err_t  mld6_leavegroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr);
 err_t  mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
 
-/* Get list of MLD6 groups for netif */
+/** @ingroup mld6
+ * Get list head of MLD6 groups for netif
+ */
 #define netif_mld6_data(netif) ((struct mld_group *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6))
 
 #ifdef __cplusplus