diff --git a/include/fmt/core.h b/include/fmt/core.h
index 0318afc7..f96ce3a1 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1841,14 +1841,6 @@ inline auto format_to_n(OutputIt out, size_t n, const S& format_str,
   Returns the number of characters in the output of
   ``format(format_str, args...)``.
  */
-template <typename S, typename... Args,
-          FMT_ENABLE_IF(is_compile_string<S>::value)>
-inline size_t formatted_size(const S& format_str, Args&&... args) {
-  const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
-  detail::counting_buffer<> buf;
-  detail::vformat_to(buf, to_string_view(format_str), vargs);
-  return buf.count();
-}
 
 template <typename... Args>
 inline size_t formatted_size(string_view format_str, Args&&... args) {
diff --git a/test/enforce-compiletime-test.cc b/test/enforce-compiletime-test.cc
index 4b2e62b8..4ae943e0 100644
--- a/test/enforce-compiletime-test.cc
+++ b/test/enforce-compiletime-test.cc
@@ -46,8 +46,6 @@ void TestFormatApi() {
 
   wchar_t wbuffer[4];
   (void)fmt::format_to_n(wbuffer, 3, FMT_STRING(L"{}"), 12345);
-
-  (void)fmt::formatted_size(FMT_STRING("{}"), 42);
 }
 void TestLiteralsApi() {
 #if FMT_USE_UDL_TEMPLATE