diff --git a/test/include/credential_pipe_test.cpp b/test/include/credential_pipe_test.cpp
index 3a750b4..ac51d29 100644
--- a/test/include/credential_pipe_test.cpp
+++ b/test/include/credential_pipe_test.cpp
@@ -1,7 +1,6 @@
 #include "credential_pipe.hpp"
 
-#include <unistd.h>
-
+#include <boost/asio/buffer.hpp>
 #include <boost/asio/io_context.hpp>
 #include <boost/asio/read.hpp>
 #include <boost/asio/readable_pipe.hpp>