diff --git a/lib/hcrypto/doxygen.c b/lib/hcrypto/doxygen.c
index 51cd53a1e..7803f83a7 100644
--- a/lib/hcrypto/doxygen.c
+++ b/lib/hcrypto/doxygen.c
@@ -50,9 +50,13 @@
  *
  * Sections of this manual:
  *
- * - @subpage page_evp
- * - @subpage page_dh
- * - @subpage page_rsa
+ * - @subpage page_evp, @ref hcrypto_evp
+ * - @subpage page_dh, @ref hcrypto_dh
+ * - @subpage page_rsa, @ref hcrypto_rsa
+ *
+ * Older interfaces that you should not use:
+ *
+ * - @subpage page_des, @ref hcrypto_des
  *
  * @subsection control_functions Control functions
  *
@@ -75,4 +79,10 @@
 /** @defgroup hcrypto_evp EVP generic crypto functions
  * See the @ref page_evp for description and examples.
  */
+/** @defgroup hcrypto_rand RAND crypto functions
+ * See the @ref page_rand for description and examples.
+ */
+/** @defgroup hcrypto_des DES crypto functions
+ * See the @ref page_des for description and examples.
+ */
 /** @defgroup hcrypto_core hcrypto function controlling behavior */