diff --git a/turtle/detail/functor.hpp b/turtle/detail/functor.hpp
index a33c768..2ac8c81 100644
--- a/turtle/detail/functor.hpp
+++ b/turtle/detail/functor.hpp
@@ -33,7 +33,4 @@ namespace detail
 }
 } // mock
 
-#define MOCK_FUNCTOR(f, S) \
-    mock::detail::functor< S > f, f##_mock
-
 #endif // MOCK_FUNCTOR_HPP_INCLUDED
diff --git a/turtle/mock.hpp b/turtle/mock.hpp
index 6793b13..3fd26da 100644
--- a/turtle/mock.hpp
+++ b/turtle/mock.hpp
@@ -27,6 +27,8 @@
     struct T : I, mock::object, mock::detail::base< I >
 #define MOCK_CLASS(T) \
     struct T : mock::object
+#define MOCK_FUNCTOR(f, S) \
+    mock::detail::functor< S > f, f##_mock
 
 #define MOCK_HELPER(t) \
     t##_mock( mock::detail::root, BOOST_PP_STRINGIZE(t) )