diff --git a/lib/gssapi/mech/doxygen.c b/lib/gssapi/mech/doxygen.c
index de44191d8..b4c7b289c 100644
--- a/lib/gssapi/mech/doxygen.c
+++ b/lib/gssapi/mech/doxygen.c
@@ -32,6 +32,12 @@
  */
 
 /*! @mainpage Heimdal GSS-API Library
+ *
+ * Heimdal implements the following mechanisms:
+ *
+ * - Kerberos 5
+ * - SPNEGO
+ * - NTLM
  *
  * The project web page: http://www.h5l.org/
  *