diff --git a/strings/base_chrono.h b/strings/base_chrono.h
index 8af906176..e8e5a1ee4 100644
--- a/strings/base_chrono.h
+++ b/strings/base_chrono.h
@@ -42,7 +42,7 @@ WINRT_EXPORT namespace winrt
 
         static time_t to_time_t(time_point const& time) noexcept
         {
-            return static_cast<time_t>(std::chrono::system_clock::to_time_t(to_sys(time)));
+            return static_cast<time_t>(std::chrono::system_clock::to_time_t(to_sys(std::chrono::time_point_cast<std::chrono::system_clock::duration>(time))));
         }
 
         static time_point from_time_t(time_t time) noexcept