diff --git a/angular-bootstrap-calendar/angular-bootstrap-calendar-tests.ts b/angular-bootstrap-calendar/angular-bootstrap-calendar-tests.ts
index 6b1a8cf1c26257..a704ced3b2de37 100644
--- a/angular-bootstrap-calendar/angular-bootstrap-calendar-tests.ts
+++ b/angular-bootstrap-calendar/angular-bootstrap-calendar-tests.ts
@@ -1,4 +1,5 @@
 ///<reference path='angular-bootstrap-calendar.d.ts'/>
+///<reference path='../angularjs/angular.d.ts'/>
 
 var myApp = angular.module('testModule');