diff --git a/passport-twitter/passport-twitter-tests.ts b/passport-twitter/passport-twitter-tests.ts
index ae644dfa2..f7d539f16 100644
--- a/passport-twitter/passport-twitter-tests.ts
+++ b/passport-twitter/passport-twitter-tests.ts
@@ -1,3 +1,5 @@
+/// <reference path="./passport-twitter.d.ts" />
+
 /**
  * Created by jcabresos on 4/19/2014.
  */