diff --git a/tests/fstests.html b/tests/fstests.html
index e43e0c1a..2e252a40 100644
--- a/tests/fstests.html
+++ b/tests/fstests.html
@@ -6,6 +6,7 @@
   <meta name="viewport" content="initial-scale=1.0">
   <script type="text/javascript" src="../libs/async_storage.js" defer></script>
   <script type="text/javascript" src="../libs/fs.js" defer></script>
+  <script type="text/javascript" src="../timer.js" defer></script>
   <script type="text/javascript">
   console.log = function() {
     var s = Array.prototype.join.call(arguments, ",") +"\n";