diff --git a/googlemaps.infobubble/google.maps.infobubble-tests.ts b/googlemaps.infobubble/google.maps.infobubble-tests.ts
index e555625d8..61f6b7ac5 100644
--- a/googlemaps.infobubble/google.maps.infobubble-tests.ts
+++ b/googlemaps.infobubble/google.maps.infobubble-tests.ts
@@ -1,3 +1,6 @@
+/// <reference path="../googlemaps/google.maps.d.ts" />
+/// <reference path="google.maps.infobubble.d.ts" />
+
 function test_options() {
     var options: google.maps.infobubble.InfoBubbleOptions;
     options = {};