1 files changed, 8 insertions, 1 deletions
diff --git a/test/functional/fixtures/tty-test.c b/test/functional/fixtures/tty-test.c
index edcbe23f86..9c42ca28d0 100644
--- a/test/functional/fixtures/tty-test.c
+++ b/test/functional/fixtures/tty-test.c
@@ -94,7 +94,14 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
   uv_tty_init(&write_loop, &out, fileno(stdout), 0);
 
   uv_write_t req;
-  uv_buf_t b = {.base = buf->base, .len = (size_t)cnt};
+  uv_buf_t b = {
+    .base = buf->base,
+#ifdef WIN32
+    .len = (ULONG)cnt
+#else
+    .len = (size_t)cnt
+#endif
+  };
   uv_write(&req, STRUCT_CAST(uv_stream_t, &out), &b, 1, NULL);
   uv_run(&write_loop, UV_RUN_DEFAULT);