diff --git a/src/api/api_lib.c b/src/api/api_lib.c
index ad92215f..60678f88 100644
--- a/src/api/api_lib.c
+++ b/src/api/api_lib.c
@@ -1260,13 +1260,13 @@ netconn_join_leave_group_netif(struct netconn *conn,
  *
  * @param name a string representation of the DNS host name to query
  * @param addr a preallocated ip_addr_t where to store the resolved IP address
- * @param dns_addrtype IP address type (IPv4 / IPv6)
  * @return ERR_OK: resolving succeeded
  *         ERR_MEM: memory error, try again later
  *         ERR_ARG: dns client not initialized or invalid hostname
  *         ERR_VAL: dns server response was invalid
  */
 #if LWIP_IPV4 && LWIP_IPV6
+/** @param dns_addrtype IP address type (IPv4 / IPv6) */
 err_t
 netconn_gethostbyname_addrtype(const char *name, ip_addr_t *addr, u8_t dns_addrtype)
 #else