diff --git a/src/server/types.d.ts b/src/server/types.d.ts
index 503bba1f9d6..be8b7a4f418 100644
--- a/src/server/types.d.ts
+++ b/src/server/types.d.ts
@@ -1,3 +1,7 @@
+/// <reference path="../compiler/types.ts"/>
+/// <reference path="../compiler/sys.ts"/>
+/// <reference path="../services/jsTyping.ts"/>
+
 declare namespace ts.server {
     export interface InstallTypingsRequest {
         readonly projectName: string;
diff --git a/src/server/typingsInstaller/typingsInstaller.ts b/src/server/typingsInstaller/typingsInstaller.ts
index cb9c5e0b232..a4c323ce62d 100644
--- a/src/server/typingsInstaller/typingsInstaller.ts
+++ b/src/server/typingsInstaller/typingsInstaller.ts
@@ -1,4 +1,4 @@
-/// <reference path="../../services/JsTyping.ts"/>
+/// <reference path="../../services/jsTyping.ts"/>
 /// <reference path="../types.d.ts"/>
 
 namespace ts.server.typingsInstaller {