diff --git a/modules/@angular/http/src/interfaces.ts b/modules/@angular/http/src/interfaces.ts
index 112e71d14d..7155e8ee40 100644
--- a/modules/@angular/http/src/interfaces.ts
+++ b/modules/@angular/http/src/interfaces.ts
@@ -68,11 +68,9 @@ export interface RequestArgs extends RequestOptionsArgs { url: string; }
  *
  * @experimental
  */
-export interface ResponseOptionsArgs {
-  body?: string|Object|FormData|ArrayBuffer|Blob;
-  status?: number;
-  statusText?: string;
+export type ResponseOptionsArgs = {
+  body?: string | Object | FormData | ArrayBuffer | Blob; status?: number; statusText?: string;
   headers?: Headers;
   type?: ResponseType;
   url?: string;
-}
+};
diff --git a/tools/public_api_guard/http/index.d.ts b/tools/public_api_guard/http/index.d.ts
index 2b0196aa37..061a804f05 100644
--- a/tools/public_api_guard/http/index.d.ts
+++ b/tools/public_api_guard/http/index.d.ts
@@ -197,14 +197,14 @@ export declare class ResponseOptions {
 }
 
 /** @experimental */
-export interface ResponseOptionsArgs {
+export declare type ResponseOptionsArgs = {
     body?: string | Object | FormData | ArrayBuffer | Blob;
-    headers?: Headers;
     status?: number;
     statusText?: string;
+    headers?: Headers;
     type?: ResponseType;
     url?: string;
-}
+};
 
 /** @experimental */
 export declare enum ResponseType {