diff --git a/test/include/core.cpp b/test/include/core.cpp
index a01644b..cb7d797 100644
--- a/test/include/core.cpp
+++ b/test/include/core.cpp
@@ -3,5 +3,6 @@
     Distributed under the Boost Software License, Version 1.0. (See accompanying
     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
+//#define BOOST_PHOENIX_NO_SPECIALIZE_CUSTOM_TERMINAL
 #include <boost/phoenix/core.hpp>
 int main() {}
diff --git a/test/include/core/nothing.cpp b/test/include/core/nothing.cpp
index 80256a1..b905a9c 100644
--- a/test/include/core/nothing.cpp
+++ b/test/include/core/nothing.cpp
@@ -3,5 +3,6 @@
     Distributed under the Boost Software License, Version 1.0. (See accompanying
     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
+//#define BOOST_PHOENIX_NO_SPECIALIZE_CUSTOM_TERMINAL
 #include <boost/phoenix/core/nothing.hpp>
 int main() {}
diff --git a/test/include/statement.cpp b/test/include/statement.cpp
index 2d53e9c..eb2d093 100644
--- a/test/include/statement.cpp
+++ b/test/include/statement.cpp
@@ -3,5 +3,6 @@
     Distributed under the Boost Software License, Version 1.0. (See accompanying
     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
+//#define BOOST_PHOENIX_NO_SPECIALIZE_CUSTOM_TERMINAL
 #include <boost/phoenix/statement.hpp>
 int main() {}
diff --git a/test/include/statement/throw.cpp b/test/include/statement/throw.cpp
index 08d30e0..5c506fe 100644
--- a/test/include/statement/throw.cpp
+++ b/test/include/statement/throw.cpp
@@ -3,5 +3,6 @@
     Distributed under the Boost Software License, Version 1.0. (See accompanying
     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
+//#define BOOST_PHOENIX_NO_SPECIALIZE_CUSTOM_TERMINAL
 #include <boost/phoenix/statement/throw.hpp>
 int main() {}