diff --git a/lib/js/test/test-int64.html b/lib/js/test/test-int64.html
index 620e6ff..bcb05fb 100644
--- a/lib/js/test/test-int64.html
+++ b/lib/js/test/test-int64.html
@@ -25,6 +25,7 @@
       <script src="build/js/thrift.js" type="text/javascript" charset="utf-8"></script>
       <!-- browserified node-int64 -->
       <script src="build/js/lib/Int64.js" type="text/javascript" charset="utf-8"></script>
+      <script src="build/js/lib/JSONInt64.js" type="text/javascript" charset="utf-8"></script>
       <!-- int64 constants to check -->
       <script src="gen-js/Int64Test_types.js" type="text/javascript" charset="utf-8"></script>