diff --git a/node/node-tests.ts b/node/node-tests.ts
index 25a19db08..7978766eb 100644
--- a/node/node-tests.ts
+++ b/node/node-tests.ts
@@ -1,3 +1,4 @@
+/// <reference path="node.d.ts" />
 import * as assert from "assert";
 import * as fs from "fs";
 import * as events from "events";