diff --git a/include/boost/integer.hpp b/include/boost/integer.hpp
index 058a905..2410859 100644
--- a/include/boost/integer.hpp
+++ b/include/boost/integer.hpp
@@ -23,6 +23,7 @@ namespace boost
   //  Helper templates  ------------------------------------------------------//
 
   //  fast integers from least integers
+  //  int_fast_t<> works correctly for unsigned too, in spite of the name.
   template< typename LeastInt >
   struct int_fast_t { typedef LeastInt fast; }; // imps may specialize
 
@@ -70,6 +71,7 @@ namespace boost
           (Bits <= std::numeric_limits<unsigned char>::digits)
         >::least  least;
       typedef typename int_fast_t<least>::fast  fast;
+      // int_fast_t<> works correctly for unsigned too, in spite of the name.
   };
 
 //  The same dispatching technique can be used to select types based on
diff --git a/integer.htm b/integer.htm
index 9dc16a1..e4d3473 100644
--- a/integer.htm
+++ b/integer.htm
@@ -34,6 +34,7 @@ appropriate to use the types supplied in <code><a href="../../boost/cstdint.hpp"
 <pre>namespace boost
 {
   //  fast integers from least integers
+  // int_fast_t&lt;&gt; works correctly for unsigned too, in spite of the name.
   template&lt; typename LeastInt &gt;  // Required: LeastInt is integral type, not bool
   struct int_fast_t { typedef LeastInt fast; }; // implementations may specialize
 
@@ -51,6 +52,7 @@ appropriate to use the types supplied in <code><a href="../../boost/cstdint.hpp"
   {
       typedef <i>implementation-supplied</i>  least;
       typedef int_fast_t&lt;least&gt;::fast  fast;
+      // int_fast_t&lt;&gt; works correctly for unsigned too, in spite of the name.
   };
 } // namespace boost
 </pre>