diff --git a/koa/koa-1.1.2-tests.ts b/koa/koa-1.1.2-tests.ts
index 9edfbbaf5..da65e5a5d 100644
--- a/koa/koa-1.1.2-tests.ts
+++ b/koa/koa-1.1.2-tests.ts
@@ -1,4 +1,4 @@
-/// <reference path="koa.d.ts" />
+/// <reference path="koa-1.1.2.d.ts" />
 
 import * as Koa from 'koa';
 var app = new Koa();
@@ -23,4 +23,4 @@ app.use(function *(): Iterable<void> {
     ctx.body = 'Hello World';
 });
 
-app.listen(3000);
\ No newline at end of file
+app.listen(3000);