diff --git a/include/boost/fusion/sequence/io/in.hpp b/include/boost/fusion/sequence/io/in.hpp
index 5ce51ffb..039190eb 100644
--- a/include/boost/fusion/sequence/io/in.hpp
+++ b/include/boost/fusion/sequence/io/in.hpp
@@ -3,7 +3,7 @@
     Copyright (c) 1999-2003 Jeremiah Willcock
     Copyright (c) 2001-2006 Joel de Guzman
 
-    Distributed under the Boost Software License, Version 1.0. (See accompanying 
+    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)
 ==============================================================================*/
 #if !defined(BOOST_IN_05042005_0120)
@@ -11,7 +11,7 @@
 
 #include <istream>
 #include <boost/fusion/sequence/io/detail/in.hpp>
-#include <boost/fusion/support/sequence_base.hpp>
+#include <boost/fusion/support/is_sequence.hpp>
 
 namespace boost { namespace fusion
 {
@@ -22,7 +22,7 @@ namespace boost { namespace fusion
         detail::read_sequence(is, seq);
         return is;
     }
-    
+
     namespace operators
     {
         template <typename Sequence>