diff --git a/include/boost/regex/regex_traits.hpp b/include/boost/regex/regex_traits.hpp
index caae5887..6edb4b8c 100644
--- a/include/boost/regex/regex_traits.hpp
+++ b/include/boost/regex/regex_traits.hpp
@@ -536,7 +536,7 @@ private:
 #endif // Wide strings
 #endif // Win32
 
-#ifndef BOOST_NO_STD_LOCALE
+#if !defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
 
 } // namspace boost
 
diff --git a/src/cpp_regex_traits.cpp b/src/cpp_regex_traits.cpp
index eff1999c..962d4531 100644
--- a/src/cpp_regex_traits.cpp
+++ b/src/cpp_regex_traits.cpp
@@ -25,7 +25,7 @@
 
 #include <boost/regex/config.hpp>
 
-#ifndef BOOST_NO_STD_LOCALE
+#if !defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
 
 # ifdef BOOST_MSVC
 #  pragma warning(disable:4786 4702 4127 4244)