diff --git a/test/tinytest_demo.c b/test/tinytest_demo.c
index bdd0e600..f6bfd66a 100644
--- a/test/tinytest_demo.c
+++ b/test/tinytest_demo.c
@@ -36,7 +36,9 @@
 #include <string.h>
 #include <errno.h>
 #include <time.h>
-#ifndef _WIN32
+#ifdef _WIN32
+#include <windows.h>
+#else
 #include <unistd.h>
 #endif