--- boost/spirit/home/classic/core/non_terminal/impl/object_with_id.ipp
+++ boost/spirit/home/classic/core/non_terminal/impl/object_with_id.ipp
@@ -136,7 +136,11 @@ BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
         {
             {
 #ifdef BOOST_SPIRIT_THREADSAFE
+#ifndef BOOST_THREAD_PROVIDES_ONCE_CXX11
                 static boost::once_flag been_here = BOOST_ONCE_INIT;
+#else
+                static boost::once_flag been_here;
+#endif
                 boost::call_once(been_here, mutex_init);
                 boost::mutex &mutex = mutex_instance();
                 boost::mutex::scoped_lock lock(mutex);
--- boost/spirit/home/classic/core/non_terminal/impl/static.hpp
+++ boost/spirit/home/classic/core/non_terminal/impl/static.hpp
@@ -111,7 +111,11 @@ BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
     typename static_<T, Tag>::storage_type static_<T, Tag>::data_;
 
     template <class T, class Tag>
+#ifndef BOOST_THREAD_PROVIDES_ONCE_CXX11
     once_flag static_<T, Tag>::constructed_ = BOOST_ONCE_INIT;
+#else
+    once_flag static_<T, Tag>::constructed_;
+#endif
 
 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
 
--- boost/spirit/home/classic/phoenix/closures.hpp
+++ boost/spirit/home/classic/phoenix/closures.hpp
@@ -419,7 +419,11 @@ private:
     closure_frame_holder_ref(holder_t* holder_ = 0)
     {
 #ifdef PHOENIX_THREADSAFE
+#ifndef BOOST_THREAD_PROVIDES_ONCE_CXX11
         static boost::once_flag been_here = BOOST_ONCE_INIT;
+#else
+        static boost::once_flag been_here;
+#endif
         boost::call_once(been_here, tsp_frame_instance_init);
         boost::thread_specific_ptr<holder_t*> &tsp_frame = tsp_frame_instance();
         if (!tsp_frame.get())