diff --git a/include/boost/numeric/ublas/matrix_assign.hpp b/include/boost/numeric/ublas/matrix_assign.hpp
index 097935e6..b8b315db 100644
--- a/include/boost/numeric/ublas/matrix_assign.hpp
+++ b/include/boost/numeric/ublas/matrix_assign.hpp
@@ -678,7 +678,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_matrix_assign (scalar_assign<typename matrix<value_type, row_major>::reference, value_type> (), cm, m, row_major_tag ());
         indexing_matrix_assign (functor1_type::template make_debug_functor<typename matrix<value_type, row_major>::reference, value_type> (), cm, e, row_major_tag ());
 #else
-        indexing_matrix_assign (scalar_assign<value_type, value_type> (), cm, m, row_major_tag ());
+        indexing_matrix_assign (scalar_assign<value_type&, value_type> (), cm, m, row_major_tag ());
         indexing_matrix_assign (functor1_type (), cm, e, row_major_tag ());
 #endif
 #endif
@@ -813,7 +813,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_matrix_assign (scalar_assign<typename matrix<value_type, column_major>::reference, value_type> (), cm, m, column_major_tag ());
         indexing_matrix_assign (functor1_type::template make_debug_functor<typename matrix<value_type, column_major>::reference, value_type> (), cm, e, column_major_tag ());
 #else
-        indexing_matrix_assign (scalar_assign<value_type, value_type> (), cm, m, column_major_tag ());
+        indexing_matrix_assign (scalar_assign<value_type&, value_type> (), cm, m, column_major_tag ());
         indexing_matrix_assign (functor1_type (), cm, e, column_major_tag ());
 #endif
 #endif
@@ -1011,7 +1011,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_matrix_assign (scalar_assign<typename matrix<value_type, row_major>::reference, value_type> (), cm, m, row_major_tag ());
         indexing_matrix_assign (functor1_type::template make_debug_functor<typename matrix<value_type, row_major>::reference, value_type> (), cm, e, row_major_tag ());
 #else
-        indexing_matrix_assign (scalar_assign<value_type, value_type> (), cm, m, row_major_tag ());
+        indexing_matrix_assign (scalar_assign<value_type&, value_type> (), cm, m, row_major_tag ());
         indexing_matrix_assign (functor1_type (), cm, e, row_major_tag ());
 #endif
 #endif
@@ -1138,7 +1138,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_matrix_assign (scalar_assign<typename matrix<value_type, column_major>::reference, value_type> (), cm, m, column_major_tag ());
         indexing_matrix_assign (functor1_type::template make_debug_functor<typename matrix<value_type, column_major>::reference, value_type> (), cm, e, column_major_tag ());
 #else
-        indexing_matrix_assign (scalar_assign<value_type, value_type> (), cm, m, column_major_tag ());
+        indexing_matrix_assign (scalar_assign<value_type&, value_type> (), cm, m, column_major_tag ());
         indexing_matrix_assign (functor1_type (), cm, e, column_major_tag ());
 #endif
 #endif
diff --git a/include/boost/numeric/ublas/vector_assign.hpp b/include/boost/numeric/ublas/vector_assign.hpp
index f2b1a646..25073210 100644
--- a/include/boost/numeric/ublas/vector_assign.hpp
+++ b/include/boost/numeric/ublas/vector_assign.hpp
@@ -321,7 +321,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_vector_assign (scalar_assign<typename vector<value_type>::reference, value_type> (), cv, v);
         indexing_vector_assign (functor_type::template make_debug_functor<typename vector<value_type>::reference, value_type> (), cv, e);
 #else
-        indexing_vector_assign (scalar_assign<value_type, value_type> (), cv, v);
+        indexing_vector_assign (scalar_assign<value_type&, value_type> (), cv, v);
         indexing_vector_assign (functor_type (), cv, e);
 #endif
 #endif
@@ -381,7 +381,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_vector_assign (scalar_assign<typename vector<value_type>::reference, value_type> (), cv, v);
         indexing_vector_assign (functor_type::template make_debug_functor<typename vector<value_type>::reference, value_type> (), cv, e);
 #else
-        indexing_vector_assign (scalar_assign<value_type, value_type> (), cv, v);
+        indexing_vector_assign (scalar_assign<value_type&, value_type> (), cv, v);
         indexing_vector_assign (functor_type (), cv, e);
 #endif
 #endif
@@ -416,7 +416,7 @@ namespace boost { namespace numeric { namespace ublas {
         indexing_vector_assign (scalar_assign<typename vector<value_type>::reference, value_type> (), cv, v);
         indexing_vector_assign (functor_type::template make_debug_functor<typename vector<value_type>::reference, value_type> (), cv, e);
 #else
-        indexing_vector_assign (scalar_assign<value_type, value_type> (), cv, v);
+        indexing_vector_assign (scalar_assign<value_type&, value_type> (), cv, v);
         indexing_vector_assign (functor_type (), cv, e);
 #endif
 #endif