diff --git a/include/boost/compat/nontype.hpp b/include/boost/compat/detail/nontype.hpp
similarity index 100%
rename from include/boost/compat/nontype.hpp
rename to include/boost/compat/detail/nontype.hpp
diff --git a/include/boost/compat/function_ref.hpp b/include/boost/compat/function_ref.hpp
index 2009921..2f2b8ce 100644
--- a/include/boost/compat/function_ref.hpp
+++ b/include/boost/compat/function_ref.hpp
@@ -5,7 +5,7 @@
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
-#include <boost/compat/nontype.hpp>
+#include <boost/compat/detail/nontype.hpp>
 #include <boost/compat/invoke.hpp>
 #include <boost/compat/type_traits.hpp>
 
diff --git a/test/nontype_test.cpp b/test/nontype_test.cpp
index 478870d..1b4cb25 100644
--- a/test/nontype_test.cpp
+++ b/test/nontype_test.cpp
@@ -2,7 +2,7 @@
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
-#include <boost/compat/nontype.hpp>
+#include <boost/compat/detail/nontype.hpp>
 #include <boost/core/lightweight_test.hpp>
 #include <boost/core/lightweight_test_trait.hpp>
 #include <boost/config/pragma_message.hpp>