diff --git a/node-dir/node-dir-tests.ts b/node-dir/node-dir-tests.ts
index 6cc03ec538..c6442de20f 100644
--- a/node-dir/node-dir-tests.ts
+++ b/node-dir/node-dir-tests.ts
@@ -1,3 +1,4 @@
+/// <reference path="../node/node.d.ts" />
 /// <reference path="node-dir.d.ts" />
 
 import * as dir from "node-dir";
diff --git a/node-dir/node-dir.d.ts b/node-dir/node-dir.d.ts
index 857cdf7bdf..3b2c91dea2 100644
--- a/node-dir/node-dir.d.ts
+++ b/node-dir/node-dir.d.ts
@@ -2,8 +2,11 @@
 // Project: https://github.com/fshost/node-dir
 // Definitions by: Panu Horsmalahti <https://github.com/panuhorsmalahti/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+///<reference path="../node/node.d.ts"/>
 
 declare module "node-dir" {
+    import { ReadStream } from "fs";
+    
     export interface Options {
         // file encoding (defaults to 'utf8')
         encoding?: string;
@@ -37,29 +40,32 @@ declare module "node-dir" {
     }
 
     export interface FileCallback {
-        (error: any, content: any, next: () => void): void;
+        (error: any, content: string | Buffer, next: () => void): void;
     }
 
     export interface FileNamedCallback {
-        (error: any, content: any, filename: string, next: () => void): void;
+        (error: any, content: string | Buffer, filename: string, next: () => void): void;
     }
 
     export interface StreamCallback {
-        (error: any, stream: any, next: () => void): void;
+        (error: any, stream: ReadStream, next: () => void): void;
     }
 
     export interface FinishedCallback {
-        (error: any, files: any): void;
+        (error: any, files: string[]): void;
+    }
+    export interface PathsResult {
+        files: string[];
+        dirs: string[];
     }
 
     export function readFiles(dir: string, fileCallback: FileCallback, finishedCallback?: FinishedCallback): void;
-	export function readFiles(dir: string, fileCallback: FileNamedCallback, finishedCallback?: FinishedCallback): void;
+    export function readFiles(dir: string, fileCallback: FileNamedCallback, finishedCallback?: FinishedCallback): void;
     export function readFiles(dir: string, options: Options, fileCallback: FileCallback, finishedCallback?: FinishedCallback): void;
     export function readFiles(dir: string, options: Options, fileCallback: FileNamedCallback, finishedCallback?: FinishedCallback): void;
-    export function readFilesStream(dir: string, options: Options, streamCallback: StreamCallback,
-        finishedCallback?: FinishedCallback): void;
-    export function files(dir: string, callback: (error: any, files: any) => void): void;
-    export function subdirs(dir: string, callback: (error: any, subdirs: any) => void): void;
-    export function paths(dir: string, callback: (error: any, paths: any) => void): void;
-    export function paths(dir: string, combine: boolean, callback: (error: any, paths: any) => void): void;
+    export function readFilesStream(dir: string, options: Options, streamCallback: StreamCallback, finishedCallback?: FinishedCallback): void;
+    export function files(dir: string, callback: (error: any, files: string[]) => void): void;
+    export function subdirs(dir: string, callback: (error: any, subdirs: string[]) => void): void;
+    export function paths(dir: string, callback: (error: any, paths: PathsResult) => void): void;
+    export function paths(dir: string, combine: boolean, callback: (error: any, paths: string[] | PathsResult) => void): void;
 }