diff --git a/include/stdex/chrono.hpp b/include/stdex/chrono.hpp
index 16f9c5886..257bdf1e3 100644
--- a/include/stdex/chrono.hpp
+++ b/include/stdex/chrono.hpp
@@ -390,7 +390,7 @@ namespace stdex {
 			template<class _Traits = std::char_traits<char>, class _Ax = std::allocator<char>>
 			static std::basic_string<char, _Traits, _Ax> to_rfc822(_In_ const time_point tp)
 			{
-				return to_str(tp, "%a, %d %b %Y %H:%M:%S GMT", locale_C);
+				return to_str(tp, "%a, %d %b %Y %H:%M:%S GMT", locale_C.get());
 			}
 		};
 	}
diff --git a/include/stdex/string.hpp b/include/stdex/string.hpp
index a8ecc0726..5d3b20fd9 100644
--- a/include/stdex/string.hpp
+++ b/include/stdex/string.hpp
@@ -8,14 +8,32 @@
 #include "sal.hpp"
 #include <assert.h>
 #include <ctype.h>
+#include <locale.h>
 #include <stdarg.h>
 #include <stdint.h>
+#include <memory>
 #include <stdexcept>
 
 namespace stdex
 {
 #ifdef _WIN32
 	using locale_t = _locale_t;
+
+	///
+	/// Deleter for unique_ptr using _free_locale
+	///
+	struct free_locale_delete
+	{
+		///
+		/// Delete a pointer
+		///
+		void operator()(_In_ locale_t locale) const
+		{
+			_free_locale(locale);
+		}
+	};
+
+	static std::unique_ptr<__crt_locale_pointers, free_locale_delete> locale_C(_create_locale(LC_ALL, "C"));
 #else
 	using locale_t = ::locale_t;
 #endif