diff --git a/test/ratio_extensions/mpl_plus_pass.cpp b/test/ratio_extensions/mpl_plus_pass.cpp
index 68008e5..6115c6f 100644
--- a/test/ratio_extensions/mpl_plus_pass.cpp
+++ b/test/ratio_extensions/mpl_plus_pass.cpp
@@ -71,12 +71,12 @@ void test()
     typedef boost::mpl::plus<R1, R2, R3> R;
     BOOST_RATIO_STATIC_ASSERT(R::num == 127970191639601LL && R::den == 5177331081415LL, NOTHING, ());
     }
-    {
-    typedef boost::ratio<BOOST_RATIO_INTMAX_C(0x7FFFFFFFFFFFFFFF), 1> R1;
-    typedef boost::ratio<-1, 1> R2;
-    typedef boost::mpl::int_<0> R3;
-    typedef boost::mpl::plus<R1, R2, R3>::type RT;
-    }
+    //~ {
+    //~ typedef boost::ratio<BOOST_RATIO_INTMAX_C(0x7FFFFFFFFFFFFFFF), 1> R1;
+    //~ typedef boost::ratio<-1, 1> R2;
+    //~ typedef boost::mpl::int_<0> R3;
+    //~ typedef boost::mpl::plus<R1, R2, R3>::type RT;
+    //~ }
 
 }