diff --git a/test/httplib.h b/test/httplib.h
index d9611df3..57b84ea8 100644
--- a/test/httplib.h
+++ b/test/httplib.h
@@ -2889,7 +2889,7 @@ inline ssize_t Stream::write(const std::string &s) {
 
 template <typename... Args>
 inline ssize_t Stream::write_format(const char *fmt, const Args &... args) {
-  std::array<char, 2048> buf;
+  std::array<char, 2048> buf{};
 
 #if defined(_MSC_VER) && _MSC_VER < 1900
   auto sn = _snprintf_s(buf, bufsiz, buf.size() - 1, fmt, args...);
@@ -3756,7 +3756,7 @@ inline socket_t Client::create_client_socket() const {
 }
 
 inline bool Client::read_response_line(Stream &strm, Response &res) {
-  std::array<char, 2048> buf;
+  std::array<char, 2048> buf{};
 
   detail::stream_line_reader line_reader(strm, buf.data(), buf.size());