diff --git a/include/boost/algorithm/cxx14/equal.hpp b/include/boost/algorithm/cxx14/equal.hpp
index cfc62d5..f1539f8 100644
--- a/include/boost/algorithm/cxx14/equal.hpp
+++ b/include/boost/algorithm/cxx14/equal.hpp
@@ -13,7 +13,8 @@
 #define BOOST_ALGORITHM_EQUAL_HPP
 
 #include <algorithm>    // for std::equal
-#include <functional>   // for std::equal_to
+#include <functional>   // for std::binary_function
+#include <iterator>
 
 namespace boost { namespace algorithm {
 
diff --git a/include/boost/algorithm/cxx14/is_permutation.hpp b/include/boost/algorithm/cxx14/is_permutation.hpp
index 9346881..639446b 100644
--- a/include/boost/algorithm/cxx14/is_permutation.hpp
+++ b/include/boost/algorithm/cxx14/is_permutation.hpp
@@ -12,8 +12,7 @@
 #ifndef BOOST_ALGORITHM_IS_PERMUTATION14_HPP
 #define BOOST_ALGORITHM_IS_PERMUTATION14_HPP
 
-#include <algorithm>    // for std::less, tie, mismatch and is_permutation (if available)
-#include <utility>      // for std::make_pair
+#include <utility>      // for std::pair
 #include <functional>   // for std::equal_to
 #include <iterator>
 
@@ -31,8 +30,6 @@ namespace boost { namespace algorithm {
 /// \param first2   The start of the second sequence
 /// \param last1    One past the end of the second sequence
 /// \note           This function is part of the C++2014 standard library.
-///  We will use the standard one if it is available,
-///     otherwise we have our own implementation.
 template< class ForwardIterator1, class ForwardIterator2 >
 bool is_permutation ( ForwardIterator1 first1, ForwardIterator1 last1, 
                       ForwardIterator2 first2, ForwardIterator2 last2 )
@@ -62,8 +59,6 @@ bool is_permutation ( ForwardIterator1 first1, ForwardIterator1 last1,
 /// \param pred     The predicate to compare elements with
 ///
 /// \note           This function is part of the C++2014 standard library.
-///  We will use the standard one if it is available,
-///     otherwise we have our own implementation.
 template< class ForwardIterator1, class ForwardIterator2, class BinaryPredicate >
 bool is_permutation ( ForwardIterator1 first1, ForwardIterator1 last1,
                       ForwardIterator2 first2, ForwardIterator2 last2, 
diff --git a/include/boost/algorithm/cxx14/mismatch.hpp b/include/boost/algorithm/cxx14/mismatch.hpp
index 926ab19..c3de418 100644
--- a/include/boost/algorithm/cxx14/mismatch.hpp
+++ b/include/boost/algorithm/cxx14/mismatch.hpp
@@ -12,7 +12,6 @@
 #ifndef BOOST_ALGORITHM_MISMATCH_HPP
 #define BOOST_ALGORITHM_MISMATCH_HPP
 
-#include <algorithm>    // for std::mismatch
 #include <utility>      // for std::pair
 
 namespace boost { namespace algorithm {