diff --git a/test/test-tcp-writealot.c b/test/test-tcp-writealot.c
index 09c96f16..841df3c0 100644
--- a/test/test-tcp-writealot.c
+++ b/test/test-tcp-writealot.c
@@ -37,9 +37,9 @@ static int shutdown_cb_called = 0;
 static int connect_cb_called = 0;
 static int write_cb_called = 0;
 static int close_cb_called = 0;
-static int bytes_sent = 0;
-static int bytes_sent_done = 0;
-static int bytes_received_done = 0;
+static size_t bytes_sent = 0;
+static size_t bytes_sent_done = 0;
+static size_t bytes_received_done = 0;
 
 static uv_connect_t connect_req;
 static uv_shutdown_t shutdown_req;