diff --git a/boost/test/tools/assertion.hpp b/boost/test/tools/assertion.hpp
index 328f030..471166e 100755
--- a/boost/test/tools/assertion.hpp
+++ b/boost/test/tools/assertion.hpp
@@ -17,6 +17,10 @@
 
 // Boost.Test
 
+#ifndef BOOST_NO_RVALUE_REFERENCES
+#include <utility> // for std::forward
+#endif
+
 // Boost
 #include <boost/mpl/assert.hpp>
 #include <boost/utility/declval.hpp>