diff --git a/libcxx/include/__condition_variable/condition_variable.h b/libcxx/include/__condition_variable/condition_variable.h
--- a/libcxx/include/__condition_variable/condition_variable.h
+++ b/libcxx/include/__condition_variable/condition_variable.h
@@ -29,10 +29,10 @@
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
-#ifndef _LIBCPP_HAS_NO_THREADS
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
+#ifndef _LIBCPP_HAS_NO_THREADS
+
 // enum class cv_status
 _LIBCPP_DECLARE_STRONG_ENUM(cv_status){no_timeout, timeout};
 _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(cv_status)
@@ -234,10 +234,10 @@
   wait_for(__lk, __tp - _Clock::now());
 }
 
-_LIBCPP_END_NAMESPACE_STD
-
 #endif // _LIBCPP_HAS_NO_THREADS
 
+_LIBCPP_END_NAMESPACE_STD
+
 _LIBCPP_POP_MACROS
 
 #endif // _LIBCPP___CONDITION_VARIABLE_CONDITION_VARIABLE_H