diff --git a/contextjs/contextjs-tests.ts b/contextjs/contextjs-tests.ts
index 0b0d55d09..abfc643ef 100644
--- a/contextjs/contextjs-tests.ts
+++ b/contextjs/contextjs-tests.ts
@@ -1,3 +1,5 @@
+/// <reference path="./contextjs.d.ts" />
+
 import context = require("contextjs");
 
 context.init();