diff --git a/include/boost/type_traits/conditional.hpp b/include/boost/type_traits/conditional.hpp
index 5890198..ec31d8b 100644
--- a/include/boost/type_traits/conditional.hpp
+++ b/include/boost/type_traits/conditional.hpp
@@ -9,6 +9,8 @@
 #ifndef BOOST_TT_CONDITIONAL_HPP_INCLUDED
 #define BOOST_TT_CONDITIONAL_HPP_INCLUDED
 
+#include <boost/config.hpp>
+
 namespace boost {
 
 template <bool b, class T, class U> struct conditional { typedef T type; };
diff --git a/include/boost/type_traits/remove_pointer.hpp b/include/boost/type_traits/remove_pointer.hpp
index a7baa76..ce32f18 100644
--- a/include/boost/type_traits/remove_pointer.hpp
+++ b/include/boost/type_traits/remove_pointer.hpp
@@ -10,6 +10,7 @@
 #define BOOST_TT_REMOVE_POINTER_HPP_INCLUDED
 
 #include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
 
 #if defined(BOOST_MSVC)
 #include <boost/type_traits/remove_cv.hpp>
diff --git a/include/boost/type_traits/type_identity.hpp b/include/boost/type_traits/type_identity.hpp
index 73cb3f3..4a03a13 100644
--- a/include/boost/type_traits/type_identity.hpp
+++ b/include/boost/type_traits/type_identity.hpp
@@ -9,6 +9,8 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 //
 
+#include <boost/config.hpp>
+
 namespace boost
 {