diff --git a/using_concept_check.htm b/using_concept_check.htm
index 2fd5218..80c95cb 100644
--- a/using_concept_check.htm
+++ b/using_concept_check.htm
@@ -114,7 +114,7 @@ int main() {
also be parenthesized. For example, the standard stable_sort
algorithm might be declared as follows:
-class template<typename RanIter> +template <class RanIter> BOOST_CONCEPT_REQUIRES( ((Mutable_RandomAccessIterator<RanIter>)) ((LessThanComparable<typename Mutable_RandomAccessIterator<RanIter>::value_type>)),