diff --git a/boost/test/utils/lazy_ostream.hpp b/boost/test/utils/lazy_ostream.hpp
index 22966e4..5b6bb17 100644
--- a/boost/test/utils/lazy_ostream.hpp
+++ b/boost/test/utils/lazy_ostream.hpp
@@ -58,7 +58,7 @@ private:
 template<typename PrevType, typename T, typename StorageT=T const&>
 class lazy_ostream_impl : public lazy_ostream {
 public:
-    lazy_ostream_impl( PrevType const& prev, T const& value )
+    lazy_ostream_impl( PrevType prev, T const& value )
     : lazy_ostream( false )
     , m_prev( prev )
     , m_value( value )