diff --git a/include/boost/fusion/algorithm/iteration/reverse_fold.hpp b/include/boost/fusion/algorithm/iteration/reverse_fold.hpp
index 76e6bf25..dffff79e 100644
--- a/include/boost/fusion/algorithm/iteration/reverse_fold.hpp
+++ b/include/boost/fusion/algorithm/iteration/reverse_fold.hpp
@@ -10,6 +10,7 @@
 #define BOOST_FUSION_ALGORITHM_ITERATION_REVERSE_FOLD_HPP
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/detail/result_of.hpp>
 #include <boost/fusion/algorithm/iteration/reverse_fold_fwd.hpp>
 #include <boost/config.hpp>
 #include <boost/fusion/sequence/intrinsic/begin.hpp>
diff --git a/include/boost/fusion/algorithm/iteration/reverse_iter_fold.hpp b/include/boost/fusion/algorithm/iteration/reverse_iter_fold.hpp
index e49f8b83..d36861f3 100644
--- a/include/boost/fusion/algorithm/iteration/reverse_iter_fold.hpp
+++ b/include/boost/fusion/algorithm/iteration/reverse_iter_fold.hpp
@@ -9,6 +9,7 @@
 #define BOOST_FUSION_ALGORITHM_ITERATION_REVERSE_ITER_FOLD_HPP
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/detail/result_of.hpp>
 #include <boost/fusion/algorithm/iteration/reverse_iter_fold_fwd.hpp>
 #include <boost/config.hpp>
 #include <boost/fusion/sequence/intrinsic/begin.hpp>