diff --git a/include/boost/io/ios_state.hpp b/include/boost/io/ios_state.hpp
index 2e66094..c9b4576 100644
--- a/include/boost/io/ios_state.hpp
+++ b/include/boost/io/ios_state.hpp
@@ -20,6 +20,7 @@
 #include <streambuf>  // for std::basic_streambuf
 #include <string>     // for std::char_traits
 
+
 namespace boost
 {
 namespace io