diff --git a/test/std/language.support/support.limits/support.limits.general/charconv.pass.cpp b/test/std/language.support/support.limits/support.limits.general/charconv.pass.cpp
new file mode 100644
index 0000000..26147fc
--- /dev/null
+++ b/test/std/language.support/support.limits/support.limits.general/charconv.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// <charconv> feature macros
+
+/*  Constant                                    Value
+    __cpp_lib_to_chars                          201611L
+
+*/
+
+#include <charconv>
+#include "test_macros.h"
+
+int main()
+{
+//  ensure that the macros that are supposed to be defined in <utility> are defined.
+
+/*
+#if !defined(__cpp_lib_fooby)
+# error "__cpp_lib_fooby is not defined"
+#elif __cpp_lib_fooby < 201606L
+# error "__cpp_lib_fooby has an invalid value"
+#endif
+*/
+}
diff --git a/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp b/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
index e67cb94..8f0322d 100644
--- a/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
+++ b/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
@@ -14,7 +14,6 @@
     __cpp_lib_as_const                          201510L
     __cpp_lib_exchange_function                 201304L
     __cpp_lib_integer_sequence                  201304L
-    __cpp_lib_to_chars                          201611L
     __cpp_lib_tuples_by_type                    201304L
 
 */