diff --git a/twilio/index.d.ts b/twilio/index.d.ts
index 022ac98440..b5b653f64a 100644
--- a/twilio/index.d.ts
+++ b/twilio/index.d.ts
@@ -6,11 +6,9 @@
 /// <reference types="express" />
 /// <reference types="node" />
 /// <reference types="q" />
-
-import * as Express from 'express';
-import * as Http from 'http';
-
-import Q = require('q');
+import Express = require("express");
+import Http = require("http");
+import Q = require("q");
 
 declare interface twilio {
   (sid?: string, tkn?: string, options?: twilio.ClientOptions): twilio.RestClient;
@@ -52,9 +50,11 @@ declare namespace twilio {
   }
 
   export interface RequestCallback { (err: any, data: any, response: Http.ClientResponse): void; }
-  export interface BaseRequestCallback { (err: any, data: any): void; }
 
-  export interface RestMethod { (args: any | BaseRequestCallback, callback?: RequestCallback): Q.Promise<any>; }
+  export interface RestMethod {
+    (callback: RequestCallback): Q.Promise<any>;
+    (args: any, callback?: RequestCallback): Q.Promise<any>;
+  }
 
   /// Resource stock interfaces
   export interface BaseMappedResource<T> {
@@ -448,7 +448,7 @@ declare namespace twilio {
   }
 
   // For interop with node middleware chains
-  export interface MiddlewareFunction { (request: Http.ServerRequest, response: Http.ServerResponse, next: Express.NextFunction): void; }
+  export interface MiddlewareFunction { (request: Http.IncomingMessage, response: Http.ServerResponse, next: Express.NextFunction): void; }
 
   export function webhook(authToken: string, options?: WebhookOptions): MiddlewareFunction;
   export function webhook(options?: WebhookOptions): MiddlewareFunction;
@@ -581,7 +581,7 @@ declare namespace twilio {
     post: RestMethod;
     create: RestMethod;
   }
-  export interface CallResource extends CreatableMappedResource<CallInstance> {
+  export interface CallResource extends CreatableMappedResource<CallInstance>, ListableResource {
     feedbackSummary: CallFeedbackSummaryResource;
   }
 
diff --git a/twilio/twilio-tests.ts b/twilio/twilio-tests.ts
index 54823816eb..44ade2e246 100644
--- a/twilio/twilio-tests.ts
+++ b/twilio/twilio-tests.ts
@@ -18,11 +18,16 @@ client.calls.get(function(err: any, response: any) {
     });
 });
 
+// Using the alias described above
+client.calls.list(function(err: any, response: any) {
+    response.calls.forEach(function(call: any) {});
+});
+
 //Get a list of calls made by this account, from this phone number
 // GET /2010-04-01/Accounts/ACCOUNT_SID/Calls?From=+16513334455
 client.calls.get({
     from:'+16513334455'
-}, function(err: any, response: any) {
+}, function(err, response) {
     response.calls.forEach(function(call: any) {
         console.log('Received call from: ' + call.from);
         console.log('This call\'s unique ID is: ' + call.sid);
@@ -31,14 +36,14 @@ client.calls.get({
 
 //Get data for a specific call
 // GET /2010-04-01/Accounts/ACCOUNT_SID/Calls/abc123...
-client.calls('abc123...').get(function(err: any, call: any) {
+client.calls('abc123...').get(function(err, call) {
     console.log('This call\'s unique ID is: ' + call.sid);
     console.log('This call was created at: ' + call.dateCreated);
 });
 
 //Get data for a specific call, for a specific account
 // GET /2010-04-01/Accounts/AC.../Calls/abc123...
-client.accounts('AC...').calls('abc123...').get(function(err: any, response: any) {
+client.accounts('AC...').calls('abc123...').get(function(err, response) {
     response.calls.forEach(function(call: any) {
         console.log('Received call from: ' + call.from);
         console.log('This call\'s unique ID is: ' + call.sid);
@@ -59,7 +64,7 @@ client.sms.messages.post({
 
 // Delete a TwiML application
 // DELETE /2010-04-01/Accounts/ACCOUNT_SID/Applications/APP...
-client.applications('APP...').delete(function(err: any, response: any, nodeResponse: any) {
+client.applications('APP...').delete(function(err, response, nodeResponse) {
     //DELETE requests do not return data - if there was no error, it worked.
     err ? console.log('There was an error') : console.log('it worked!');
 });