diff --git a/factory/test/factory_with_none_t.cpp b/factory/test/factory_with_none_t.cpp
index cf203f0..bce3b4f 100644
--- a/factory/test/factory_with_none_t.cpp
+++ b/factory/test/factory_with_none_t.cpp
@@ -8,6 +8,7 @@
 
 #include <boost/functional/factory.hpp>
 #include <boost/detail/lightweight_test.hpp>
+#include <boost/none_t.hpp>
 
 #include <memory>