diff --git a/library/src/encryption.cpp b/library/src/encryption.cpp
index fd06cd0..12d86eb 100644
--- a/library/src/encryption.cpp
+++ b/library/src/encryption.cpp
@@ -136,9 +136,9 @@ inline auto GenerateAuthScramMessageImpl(std::string_view password,
   auto storedKey = HashImpl(clientKey, tag);
   auto authMessage = std::format("{},{},{}", initialMessage, firstServerMessage, clientFinalMessageBare);
   auto clientSignature = HmacImpl(ToCharStringView(storedKey), ToUnsignedCharStringView(authMessage), tag);
-  auto clientProof = std::views::iota(std::size_t{}, clientKey.size()) |  // No std::views::enumerate in libc++
-                     std::views::transform([&](auto i) {
-                       return clientKey[i] ^ clientSignature[i];
+  auto clientProof = std::views::zip(clientKey, clientSignature) |  // No std::views::enumerate in libc++
+                     std::views::transform([&](auto arg) {
+                       return arg.first ^ arg.second;
                      }) |
                      std::ranges::to<std::string>();
   std::string serverKeyStr = "Server Key";