diff --git a/include/boost/graph/detail/array_binary_tree.hpp b/include/boost/graph/detail/array_binary_tree.hpp index e59da9e17..fd403d1f3 100644 --- a/include/boost/graph/detail/array_binary_tree.hpp +++ b/include/boost/graph/detail/array_binary_tree.hpp @@ -14,6 +14,7 @@ #include #include #include +#include namespace boost {