diff --git a/include/boost/throw_exception.hpp b/include/boost/throw_exception.hpp
index 77d806e..c50677a 100644
--- a/include/boost/throw_exception.hpp
+++ b/include/boost/throw_exception.hpp
@@ -116,7 +116,7 @@ public:
 
         boost::exception_detail::copy_boost_exception( p, this );
 
-        del.p_ = 0;
+        del.p_ = BOOST_NULLPTR;
         return p;
     }