diff --git a/include/boost/range/size_type.hpp b/include/boost/range/size_type.hpp
old mode 100755
new mode 100644
index 7ed8dfa..9993d55
--- a/include/boost/range/size_type.hpp
+++ b/include/boost/range/size_type.hpp
@@ -67,7 +67,8 @@ namespace boost
     { };
 
     template< class T >
-    struct range_size<const T > : range_size<T>
+    struct range_size<const T >
+		: detail::range_size<T>
     { };
     
 } // namespace boost