diff --git a/build/vc80/turtle.vcproj b/build/vc80/turtle.vcproj
index 9276e53..461616d 100644
--- a/build/vc80/turtle.vcproj
+++ b/build/vc80/turtle.vcproj
@@ -204,6 +204,10 @@
 				RelativePath="..\..\src\libraries\turtle\object.hpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\src\libraries\turtle\orderable.hpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\src\libraries\turtle\placeholder.hpp"
 				>
diff --git a/src/libraries/turtle/mock.hpp b/src/libraries/turtle/mock.hpp
index de87a21..646c4b6 100644
--- a/src/libraries/turtle/mock.hpp
+++ b/src/libraries/turtle/mock.hpp
@@ -124,20 +124,20 @@ namespace detail
 
     template< typename E >
     E& configure( BOOST_DEDUCED_TYPENAME E::expectation_tag,
-        const std::string& object, const std::string& /*op*/,
+        const std::string& parent, const std::string& /*op*/,
         const std::string& /*name*/, E& e )
     {
-        if( object != "?" || e.tag() == "?" )
-            e.tag( object );
+        if( parent != "?" || e.tag() == "?" )
+            e.tag( parent );
         return e;
     }
     template< typename E, typename T >
-    E& configure( E& e, const std::string& object, const std::string& op,
+    E& configure( E& e, const std::string& parent, const std::string& op,
         const std::string& name, const T& t )
     {
         set_parent( e, t );
-        if( object != "?" || e.tag() == "?" )
-            e.tag( object + op + type_name< T >() + "::" + name );
+        if( parent != "?" || e.tag() == "?" )
+            e.tag( parent + op + type_name< T >() + "::" + name );
         return e;
     }
 
diff --git a/src/libraries/turtle/orderable.hpp b/src/libraries/turtle/orderable.hpp
new file mode 100644
index 0000000..1404225
--- /dev/null
+++ b/src/libraries/turtle/orderable.hpp
@@ -0,0 +1,30 @@
+//
+//  Copyright Mathieu Champlon 2009
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef MOCK_ORDERABLE_HPP_INCLUDED
+#define MOCK_ORDERABLE_HPP_INCLUDED
+
+namespace mock
+{
+    class sequence;
+
+namespace detail
+{
+    class orderable
+    {
+    public:
+        orderable() {}
+        virtual ~orderable() {}
+
+        virtual void remove( sequence& s ) = 0;
+    };
+}
+
+}
+
+#endif // #ifndef MOCK_ORDERABLE_HPP_INCLUDED
diff --git a/src/libraries/turtle/sequence.hpp b/src/libraries/turtle/sequence.hpp
index 0964d26..59066a8 100644
--- a/src/libraries/turtle/sequence.hpp
+++ b/src/libraries/turtle/sequence.hpp
@@ -9,25 +9,12 @@
 #ifndef MOCK_SEQUENCE_HPP_INCLUDED
 #define MOCK_SEQUENCE_HPP_INCLUDED
 
+#include "orderable.hpp"
 #include <vector>
 #include <algorithm>
 
 namespace mock
 {
-    class sequence;
-
-namespace detail
-{
-    class orderable
-    {
-    public:
-        orderable() {}
-        virtual ~orderable() {}
-
-        virtual void remove( sequence& s ) = 0;
-    };
-}
-
     class sequence
     {
     public: