diff --git a/libcxx/include/barrier b/libcxx/include/barrier
--- a/libcxx/include/barrier
+++ b/libcxx/include/barrier
@@ -57,9 +57,7 @@
 # error <barrier> is not supported on this single threaded system
 #endif
 
-#if _LIBCPP_STD_VER < 14
-# error <barrier> requires C++14 or later
-#endif
+#if _LIBCPP_STD_VER >= 14
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
@@ -319,4 +317,6 @@
 
 _LIBCPP_END_NAMESPACE_STD
 
+#endif // _LIBCPP_STD_VER >= 14
+
 #endif //_LIBCPP_BARRIER
diff --git a/libcxx/include/latch b/libcxx/include/latch
--- a/libcxx/include/latch
+++ b/libcxx/include/latch
@@ -49,9 +49,7 @@
 # error <latch> is not supported on this single threaded system
 #endif
 
-#if _LIBCPP_STD_VER < 14
-# error <latch> requires C++14 or later
-#endif
+#if _LIBCPP_STD_VER >= 14
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
@@ -101,4 +99,6 @@
 
 _LIBCPP_END_NAMESPACE_STD
 
+#endif // _LIBCPP_STD_VER >= 14
+
 #endif //_LIBCPP_LATCH
diff --git a/libcxx/include/module.modulemap b/libcxx/include/module.modulemap
--- a/libcxx/include/module.modulemap
+++ b/libcxx/include/module.modulemap
@@ -232,7 +232,6 @@
     export *
   }
   module barrier {
-    requires cplusplus14
     header "barrier"
     export *
   }
@@ -340,7 +339,6 @@
     export *
   }
   module latch {
-    requires cplusplus14
     header "latch"
     export *
   }
@@ -411,7 +409,6 @@
     export *
   }
   module semaphore {
-    requires cplusplus14
     header "semaphore"
     export *
   }
diff --git a/libcxx/include/semaphore b/libcxx/include/semaphore
--- a/libcxx/include/semaphore
+++ b/libcxx/include/semaphore
@@ -58,9 +58,7 @@
 # error <semaphore> is not supported on this single threaded system
 #endif
 
-#if _LIBCPP_STD_VER < 14
-# error <semaphore> is requires C++14 or later
-#endif
+#if _LIBCPP_STD_VER >= 14
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
@@ -230,4 +228,6 @@
 
 _LIBCPP_END_NAMESPACE_STD
 
+#endif // _LIBCPP_STD_VER >= 14
+
 #endif //_LIBCPP_SEMAPHORE