diff --git a/src/libraries/turtle/expectation.hpp b/src/libraries/turtle/expectation.hpp
index c3937a5..14fceca 100644
--- a/src/libraries/turtle/expectation.hpp
+++ b/src/libraries/turtle/expectation.hpp
@@ -46,11 +46,11 @@ namespace mock
                 matcher_type;
 
     public:
-        expectation( node& parent = root, const std::string& name = "?" )
+        expectation( node& parent = detail::root, const std::string& name = "?" )
             : impl_( new expectation_impl( parent, name ) )
         {}
         expectation( const std::string& name )
-            : impl_( new expectation_impl( root, name ) )
+            : impl_( new expectation_impl( detail::root, name ) )
         {}
 
         expectation& set_name( const std::string& name )
diff --git a/src/libraries/turtle/object.hpp b/src/libraries/turtle/object.hpp
index e180c41..c5c07b8 100644
--- a/src/libraries/turtle/object.hpp
+++ b/src/libraries/turtle/object.hpp
@@ -19,12 +19,12 @@ namespace mock
     class object : public node
     {
     public:
-        explicit object( node& parent = root, const std::string& name = "" )
+        explicit object( node& parent = detail::root, const std::string& name = "" )
             : node( parent )
             , name_( name )
         {}
         explicit object( const std::string& name )
-            : node( root )
+            : node( detail::root )
             , name_( name )
         {}
 
diff --git a/src/libraries/turtle/root.hpp b/src/libraries/turtle/root.hpp
index addb59b..075fc9c 100644
--- a/src/libraries/turtle/root.hpp
+++ b/src/libraries/turtle/root.hpp
@@ -13,6 +13,8 @@
 #include <boost/test/utils/trivial_singleton.hpp>
 
 namespace mock
+{
+namespace detail
 {
     class root_t : public boost::unit_test::singleton< root_t >, public node
     {
@@ -22,14 +24,15 @@ namespace mock
         BOOST_TEST_SINGLETON_CONS( root_t );
     };
     BOOST_TEST_SINGLETON_INST( root )
+}
 
     inline bool verify()
     {
-        return root.verify();
+        return detail::root.verify();
     }
     inline void reset()
     {
-        root.reset();
+        detail::root.reset();
     }
 }