2 files changed, 5 insertions, 2 deletions
diff --git a/src/rng/auto_rng/auto_rng.h b/src/rng/auto_rng/auto_rng.h
index 90f342a50..28a603feb 100644
--- a/src/rng/auto_rng/auto_rng.h
+++ b/src/rng/auto_rng/auto_rng.h
@@ -14,6 +14,9 @@
 
 namespace Botan {
 
+/**
+* An automatically seeded PRNG
+*/
 class BOTAN_DLL AutoSeeded_RNG : public RandomNumberGenerator
    {
    public:
diff --git a/src/rng/rng.h b/src/rng/rng.h
index c53d8e22d..687f98d13 100644
--- a/src/rng/rng.h
+++ b/src/rng/rng.h
@@ -82,8 +82,8 @@ class BOTAN_DLL RandomNumberGenerator
          { return (*this); }
    };
 
-/*
-* Null Random Number Generator
+/**
+* Null/stub RNG - fails if you try to use it for anything
 */
 class BOTAN_DLL Null_RNG : public RandomNumberGenerator
    {