diff --git a/README.md b/README.md
index 18bf780c..0de75b94 100644
--- a/README.md
+++ b/README.md
@@ -1105,7 +1105,7 @@ It can be observed that there is only one copy of the scoped or unscoped enum va
 | [gcc](https://gcc.gnu.org/projects/cxx-status.html) | `11`, `12`, `13`| `std::format` not complete in `11`, `12` | `<= 10` |
 | [clang](https://clang.llvm.org/cxx_status.html) | `15`, `16`| Catch2 needs `cxx_std_20` in `15` | `<= 14` |
 | [msvc](https://learn.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance) | `16`, `17` | Visual Studio 2019,2022, latest `17.9.5`| `<= 16.9`|
-| [xcode](https://developer.apple.com/support/xcode/) | `15` | Some clang issues| `<= 14`|
+| [xcode](https://developer.apple.com/support/xcode/) | `15` | Some issues with `constexpr`, workarounds| `<= 14`|
 
 [^1]:&copy; 2024 Fix8 Market Technologies Pty Ltd, David L. Dight.
 [^2]:&copy; 2019 - 2024 Daniil Goncharov
diff --git a/include/fix8/conjure_enum.hpp b/include/fix8/conjure_enum.hpp
index 7bad2216..531a6106 100644
--- a/include/fix8/conjure_enum.hpp
+++ b/include/fix8/conjure_enum.hpp
@@ -182,7 +182,7 @@ class conjure_enum final
 
 #if defined(__clang__) && defined(__apple_build_version__) // std::count_if not constexpr in xcode/clang
 	template<std::size_t N>
-	static constexpr auto count_if_constexpr(const std::array<bool, N>& valid) noexcept
+	static constexpr auto count_if_constexpr(const bool (&valid)[N]) noexcept
 	{
 		std::size_t cnt{};
 		for(std::size_t nn{}; nn < N; ++nn)
@@ -195,10 +195,11 @@ class conjure_enum final
 	template<std::size_t... I>
 	static constexpr auto _values(std::index_sequence<I...>) noexcept
 	{
-		constexpr std::array<bool, sizeof...(I)> valid { is_valid<static_cast<T>(enum_min_value + I)>()... };
 #if defined(__clang__) && defined(__apple_build_version__)
+		constexpr bool valid[sizeof...(I)] { is_valid<static_cast<T>(enum_min_value + I)>()... };
 		constexpr auto num_valid { count_if_constexpr(valid) };
 #else
+		constexpr std::array<bool, sizeof...(I)> valid { is_valid<static_cast<T>(enum_min_value + I)>()... };
 		constexpr auto num_valid { std::count_if(valid.cbegin(), valid.cend(), [](bool val) noexcept { return val; }) };
 #endif
 		static_assert(num_valid > 0, "conjure_enum requires non-empty enum");