diff --git a/iterator_adaptors.htm b/iterator_adaptors.htm
index 9ace4c8..7912cbd 100644
--- a/iterator_adaptors.htm
+++ b/iterator_adaptors.htm
@@ -515,7 +515,7 @@ struct default_iterator_policies
argument and that we'll need to be able to deduce the result_type
of the function so we can use it for the adapted iterator's
value_type. AdaptableUnaryFunction
+ "http://www.sgi.com/tech/stl/AdaptableUnaryFunction.html">AdaptableUnaryFunction
is the Concept
that fulfills those requirements.