#include <boost/version.hpp>
-#if BOOST_VERSION < 103301
+
+//namespace lyx {
+
+#if BOOST_VERSION < 103300
# include <boost/test/detail/nullstream.hpp>
#else
# include <boost/test/utils/nullstream.hpp>
typedef basic_debugstream<debug_trait> debugstream;
+
+//} // namespace lyx
+
#endif