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diff --git a/boost/geometry/algorithms/detail/distance/box_to_box.hpp b/boost/geometry/algorithms/detail/distance/box_to_box.hpp
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+++ b/boost/geometry/algorithms/detail/distance/box_to_box.hpp
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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2014, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
+
+#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISTANCE_BOX_TO_BOX_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISTANCE_BOX_TO_BOX_HPP
+
+#include <boost/core/ignore_unused.hpp>
+
+#include <boost/geometry/core/point_type.hpp>
+#include <boost/geometry/core/tags.hpp>
+
+#include <boost/geometry/strategies/distance.hpp>
+#include <boost/geometry/strategies/tags.hpp>
+
+#include <boost/geometry/algorithms/dispatch/distance.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DISPATCH
+namespace dispatch
+{
+
+
+template <typename Box1, typename Box2, typename Strategy>
+struct distance
+    <
+        Box1, Box2, Strategy, box_tag, box_tag,
+        strategy_tag_distance_box_box, false
+    >
+{
+    static inline typename strategy::distance::services::return_type
+        <
+            Strategy,
+            typename point_type<Box1>::type,
+            typename point_type<Box2>::type
+        >::type
+    apply(Box1 const& box1, Box2 const& box2, Strategy const& strategy)
+    {
+        boost::ignore_unused(strategy);
+        return strategy.apply(box1, box2);
+    }
+};
+
+
+} // namespace dispatch
+#endif // DOXYGEN_NO_DISPATCH
+
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISTANCE_BOX_TO_BOX_HPP