diff --git a/include/boost/iterator/transform_iterator.hpp b/include/boost/iterator/transform_iterator.hpp
index e449a8b..c365fe0 100644
--- a/include/boost/iterator/transform_iterator.hpp
+++ b/include/boost/iterator/transform_iterator.hpp
@@ -7,7 +7,6 @@
 #ifndef BOOST_TRANSFORM_ITERATOR_23022003THW_HPP
 #define BOOST_TRANSFORM_ITERATOR_23022003THW_HPP
 
-#include <boost/function.hpp>
 #include <boost/iterator.hpp>
 #include <boost/iterator/detail/enable_if.hpp>
 #include <boost/iterator/iterator_adaptor.hpp>