diff --git a/include/boost/iterator/function_input_iterator.hpp b/include/boost/iterator/function_input_iterator.hpp
index 1ad91b3..f3e9de9 100644
--- a/include/boost/iterator/function_input_iterator.hpp
+++ b/include/boost/iterator/function_input_iterator.hpp
@@ -9,6 +9,7 @@
 #ifndef BOOST_FUNCTION_INPUT_ITERATOR
 #define BOOST_FUNCTION_INPUT_ITERATOR
 
+#include <boost/config.hpp>
 #include <boost/assert.hpp>
 #include <boost/mpl/if.hpp>
 #include <boost/function_types/is_function_pointer.hpp>
diff --git a/test/function_input_iterator_test.cpp b/test/function_input_iterator_test.cpp
index e57ca2a..fa8f12b 100644
--- a/test/function_input_iterator_test.cpp
+++ b/test/function_input_iterator_test.cpp
@@ -11,6 +11,7 @@
 #include <iterator>
 #include <vector>
 
+#include <boost/config.hpp>
 #include <boost/iterator/function_input_iterator.hpp>
 
 namespace {