--- config-orig.hpp	2016-02-16 09:50:48.430215600 -0800
+++ config.hpp	2016-03-16 09:45:32.235526900 -0700
@@ -64,7 +64,7 @@
 
 //____________________________________________________________________________//
 
-#if defined(__GNUC__) || BOOST_WORKAROUND(BOOST_MSVC, == 1400)
+#if defined(__GNUC__) || BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
 #define BOOST_TEST_PROTECTED_VIRTUAL virtual
 #else
 #define BOOST_TEST_PROTECTED_VIRTUAL