diff --git a/src/include/lwip/apps/netbiosns_opts.h b/src/include/lwip/apps/netbiosns_opts.h
index 9fe35022..870b9fdf 100644
--- a/src/include/lwip/apps/netbiosns_opts.h
+++ b/src/include/lwip/apps/netbiosns_opts.h
@@ -34,13 +34,19 @@
 
 #include "lwip/opt.h"
 
+/**
+ * @defgroup netbiosns_opts Options
+ * @ingroup netbiosns
+ * @{
+ */
+
 /** Since there's no standard function for case-insensitive string comparision,
  * we need another define here:
  * define this to stricmp() for windows or strcasecmp() for linux.
  * If not defined, comparision is case sensitive and the provided hostname must be
  * uppercase.
  */
-#ifndef NETBIOS_STRCMP
+#if !defined NETBIOS_STRCMP || defined __DOXYGEN__
 #define NETBIOS_STRCMP(str1, str2) strcmp(str1, str2)
 #endif
 
@@ -52,7 +58,12 @@
  *
  * If this is not defined, netbiosns_set_name() can be called at runtime to change the name.
  */
-/*#define NETBIOS_LWIP_NAME "NETBIOSLWIPDEV"*/
+#ifdef __DOXYGEN__
+#define NETBIOS_LWIP_NAME "NETBIOSLWIPDEV"
+#endif
 
+/**
+ * @}
+ */
 
 #endif /* LWIP_HDR_APPS_NETBIOS_OPTS_H */