diff --git a/modules/@angular/http/http.ts b/modules/@angular/http/http.ts
index 85e23d47d3..5b185824c0 100644
--- a/modules/@angular/http/http.ts
+++ b/modules/@angular/http/http.ts
@@ -334,7 +334,10 @@ export const JSONP_PROVIDERS: any[] = [
   {provide: JSONPBackend, useClass: JSONPBackend_},
 ];
 
-function jsonpFactory(jsonpBackend: JSONPBackend, requestOptions: RequestOptions) {
+/**
+ * @experimental
+ */
+export function jsonpFactory(jsonpBackend: JSONPBackend, requestOptions: RequestOptions): Jsonp {
   return new Jsonp(jsonpBackend, requestOptions);
 }
 
diff --git a/tools/public_api_guard/http/index.d.ts b/tools/public_api_guard/http/index.d.ts
index 542e3a22b8..e0b28dea96 100644
--- a/tools/public_api_guard/http/index.d.ts
+++ b/tools/public_api_guard/http/index.d.ts
@@ -108,6 +108,9 @@ export declare abstract class JSONPConnection implements Connection {
     abstract finished(data?: any): void;
 }
 
+/** @experimental */
+export declare function jsonpFactory(jsonpBackend: JSONPBackend, requestOptions: RequestOptions): Jsonp;
+
 /** @experimental */
 export declare class JsonpModule {
 }