Index: boost/numeric/ublas/vector_expression.hpp
===================================================================
--- boost/numeric/ublas/vector_expression.hpp	(revision 66618)
+++ boost/numeric/ublas/vector_expression.hpp	(working copy)
@@ -1171,11 +1171,11 @@
     template<class T1, class E2>
     BOOST_UBLAS_INLINE
     typename enable_if< is_convertible<T1, typename E2::value_type >,    
-		    typename vector_binary_scalar1_traits<const T1, E2, scalar_addtion<T1, typename E2::value_type> >::result_type
+		    typename vector_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::result_type
 	    >::type
     operator + (const T1 &e1,
                 const vector_expression<E2> &e2) {
-        typedef typename vector_binary_scalar1_traits<const T1, E2, scalar_addition<T1, typename E2::value_type> >::expression_type expression_type;
+        typedef typename vector_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::expression_type expression_type;
         return expression_type (e1, e2 ());
     }