diff --git a/tests/proxy.cpp b/tests/proxy.cpp
index 56f13c5..bcda66d 100644
--- a/tests/proxy.cpp
+++ b/tests/proxy.cpp
@@ -99,8 +99,11 @@ TEST(Socks5ProxyTest, ConnectViaProxy) {
         expected_request[req_len++] = static_cast<std::uint8_t>(network_order_port & 0xFF);
 
         std::string expected_data = expected_greeting;
-        expected_data.append(reinterpret_cast<const char*>(expected_request.data()), req_len);
+        auto transformed_view = expected_request | std::views::take(req_len) | std::views::transform([](std::uint8_t byte) {
+                                  return static_cast<char>(byte);
+                                });
 
+        expected_data.append(std::ranges::to<std::string>(transformed_view));
         EXPECT_EQ(sent_data, expected_data);
 
         co_return;