diff --git a/test/eif_namespace_disambiguation.cpp b/test/eif_namespace_disambiguation.cpp
index 2a090cc..d190ee2 100644
--- a/test/eif_namespace_disambiguation.cpp
+++ b/test/eif_namespace_disambiguation.cpp
@@ -10,16 +10,19 @@
 //             Jeremiah Willcock (jewillco at osl.iu.edu)
 //             Andrew Lumsdaine (lums at osl.iu.edu)
 
-#include <boost/mpl/not.hpp>
-
+#include <boost/config.hpp>
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
 #include <boost/detail/lightweight_test.hpp>
 
 using boost::enable_if;
-using boost::mpl::not_;
 using boost::is_arithmetic;
 
+template<class T> struct not_
+{
+  BOOST_STATIC_CONSTANT( bool, value = !T::value );
+};
+
 namespace A {
   template<class T>
   typename enable_if<is_arithmetic<T>, bool>::type
diff --git a/test/eif_no_disambiguation.cpp b/test/eif_no_disambiguation.cpp
index d2ecbd9..385451b 100644
--- a/test/eif_no_disambiguation.cpp
+++ b/test/eif_no_disambiguation.cpp
@@ -10,16 +10,19 @@
 //             Jeremiah Willcock (jewillco at osl.iu.edu)
 //             Andrew Lumsdaine (lums at osl.iu.edu)
 
-#include <boost/mpl/not.hpp>
-
+#include <boost/config.hpp>
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
 #include <boost/detail/lightweight_test.hpp>
 
-using boost::mpl::not_;
 using boost::enable_if;
 using boost::is_arithmetic;
 
+template<class T> struct not_
+{
+  BOOST_STATIC_CONSTANT( bool, value = !T::value );
+};
+
 template<class T>
 typename enable_if<is_arithmetic<T>, bool>::type
 arithmetic_object(T t) { return true; }