diff --git a/include/boost/io/ios_state.hpp b/include/boost/io/ios_state.hpp
index 558646f..2e66094 100644
--- a/include/boost/io/ios_state.hpp
+++ b/include/boost/io/ios_state.hpp
@@ -10,6 +10,7 @@
 #define BOOST_IO_IOS_STATE_HPP
 
 #include <boost/io_fwd.hpp>  // self include
+#include <boost/detail/workaround.hpp>
 
 #include <ios>        // for std::ios_base, std::basic_ios, etc.
 #ifndef BOOST_NO_STD_LOCALE
@@ -19,8 +20,6 @@
 #include <streambuf>  // for std::basic_streambuf
 #include <string>     // for std::char_traits
 
-#include <boost/detail/workaround.hpp>  // for BOOST_WORKAROUND
-
 namespace boost
 {
 namespace io