diff --git a/modules/@angular/core/src/application_ref.ts b/modules/@angular/core/src/application_ref.ts
index 9345041636..462b298786 100644
--- a/modules/@angular/core/src/application_ref.ts
+++ b/modules/@angular/core/src/application_ref.ts
@@ -22,7 +22,7 @@ import {NgModuleFactory, NgModuleInjector, NgModuleRef} from './linker/ng_module
 import {WtfScopeFn, wtfCreateScope, wtfLeave} from './profile/profile';
 import {Testability, TestabilityRegistry} from './testability/testability';
 import {Type} from './type';
-import {NgZone, NgZoneError} from './zone/ng_zone';
+import {NgZone} from './zone/ng_zone';
 
 var _devMode: boolean = true;
 var _runModeLocked: boolean = false;
@@ -300,9 +300,8 @@ export class PlatformRef_ extends PlatformRef {
         throw new Error('No ExceptionHandler. Is platform module (BrowserModule) included?');
       }
       moduleRef.onDestroy(() => ListWrapper.remove(this._modules, moduleRef));
-      ngZone.onError.subscribe({
-        next: (error: NgZoneError) => { exceptionHandler.call(error.error, error.stackTrace); }
-      });
+      ngZone.onError.subscribe(
+          {next: (error: any) => { exceptionHandler.call(error, error ? error.stack : null); }});
       return _callAndReportToExceptionHandler(exceptionHandler, () => {
         const initStatus: ApplicationInitStatus = moduleRef.injector.get(ApplicationInitStatus);
         return initStatus.donePromise.then(() => {
diff --git a/modules/@angular/core/src/zone.ts b/modules/@angular/core/src/zone.ts
index f4ff185c1a..e4f9a99060 100644
--- a/modules/@angular/core/src/zone.ts
+++ b/modules/@angular/core/src/zone.ts
@@ -7,4 +7,4 @@
  */
 
 // Public API for Zone
-export {NgZone, NgZoneError} from './zone/ng_zone';
+export {NgZone} from './zone/ng_zone';
diff --git a/modules/@angular/core/src/zone/ng_zone.ts b/modules/@angular/core/src/zone/ng_zone.ts
index c62060e0f6..89a54d33ac 100644
--- a/modules/@angular/core/src/zone/ng_zone.ts
+++ b/modules/@angular/core/src/zone/ng_zone.ts
@@ -9,10 +9,7 @@
 import {EventEmitter} from '../facade/async';
 import {BaseException} from '../facade/exceptions';
 
-import {NgZoneError, NgZoneImpl} from './ng_zone_impl';
-
-export {NgZoneError} from './ng_zone_impl';
-
+import {NgZoneImpl} from './ng_zone_impl';
 
 
 /**
@@ -139,7 +136,7 @@ export class NgZone {
         this._checkStable();
       },
       setMacrotask: (hasMacrotasks: boolean) => { this._hasPendingMacrotasks = hasMacrotasks; },
-      onError: (error: NgZoneError) => this._onErrorEvents.emit(error)
+      onError: (error: any) => this._onErrorEvents.emit(error)
     });
   }
 
diff --git a/modules/@angular/core/src/zone/ng_zone_impl.ts b/modules/@angular/core/src/zone/ng_zone_impl.ts
index e104d09edd..5c432a25f7 100644
--- a/modules/@angular/core/src/zone/ng_zone_impl.ts
+++ b/modules/@angular/core/src/zone/ng_zone_impl.ts
@@ -6,14 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-/**
- * Stores error information; delivered via [NgZone.onError] stream.
- * @deprecated
- */
-export class NgZoneError {
-  constructor(public error: any, public stackTrace: any) {}
-}
-
 
 export class NgZoneImpl {
   static isInAngularZone(): boolean { return Zone.current.get('isAngularZone') === true; }
@@ -27,7 +19,7 @@ export class NgZoneImpl {
   private onLeave: () => void;
   private setMicrotask: (hasMicrotasks: boolean) => void;
   private setMacrotask: (hasMacrotasks: boolean) => void;
-  private onError: (error: NgZoneError) => void;
+  private onError: (error: any) => void;
 
   constructor({trace, onEnter, onLeave, setMicrotask, setMacrotask, onError}: {
     trace: boolean,
@@ -35,7 +27,7 @@ export class NgZoneImpl {
     onLeave: () => void,
     setMicrotask: (hasMicrotasks: boolean) => void,
     setMacrotask: (hasMacrotasks: boolean) => void,
-    onError: (error: NgZoneError) => void
+    onError: (error: any) => void
   }) {
     this.onEnter = onEnter;
     this.onLeave = onLeave;
@@ -92,7 +84,7 @@ export class NgZoneImpl {
         onHandleError: (delegate: ZoneDelegate, current: Zone, target: Zone, error: any):
                            boolean => {
                              delegate.handleError(target, error);
-                             this.onError(new NgZoneError(error, error.stack));
+                             this.onError(error);
                              return false;
                            }
       });
diff --git a/modules/@angular/core/test/zone/ng_zone_spec.ts b/modules/@angular/core/test/zone/ng_zone_spec.ts
index 81e7acb6b6..5db6bdf91d 100644
--- a/modules/@angular/core/test/zone/ng_zone_spec.ts
+++ b/modules/@angular/core/test/zone/ng_zone_spec.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {NgZone, NgZoneError} from '@angular/core/src/zone/ng_zone';
+import {NgZone} from '@angular/core/src/zone/ng_zone';
 import {AsyncTestCompleter, Log, beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
 import {browserDetection} from '@angular/platform-browser/testing/browser_util';
 
@@ -31,9 +31,9 @@ const resolvedPromise = Promise.resolve(null);
 
 function logOnError() {
   _zone.onError.subscribe({
-    next: (ngErr: NgZoneError) => {
-      _errors.push(ngErr.error);
-      _traces.push(ngErr.stackTrace);
+    next: (error: any) => {
+      _errors.push(error);
+      _traces.push(error.stack);
     }
   });
 }
diff --git a/modules/@angular/core/testing/component_fixture.ts b/modules/@angular/core/testing/component_fixture.ts
index 9741e46718..9ebadc3701 100644
--- a/modules/@angular/core/testing/component_fixture.ts
+++ b/modules/@angular/core/testing/component_fixture.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {AnimationEntryMetadata, ChangeDetectorRef, ComponentFactory, ComponentRef, ComponentResolver, DebugElement, ElementRef, Injectable, Injector, NgZone, NgZoneError, OpaqueToken, ViewMetadata, getDebugNode} from '../index';
+import {ChangeDetectorRef, ComponentRef, DebugElement, ElementRef, NgZone, getDebugNode} from '../index';
 import {BaseException} from '../src/facade/exceptions';
 import {scheduleMicroTask} from '../src/facade/lang';
 
@@ -108,7 +108,7 @@ export class ComponentFixture<T> {
       });
 
       this._onErrorSubscription =
-          ngZone.onError.subscribe({next: (error: NgZoneError) => { throw error.error; }});
+          ngZone.onError.subscribe({next: (error: any) => { throw error; }});
     }
   }
 
diff --git a/tools/public_api_guard/core/index.d.ts b/tools/public_api_guard/core/index.d.ts
index 3fc14c6f98..0adb906e9f 100644
--- a/tools/public_api_guard/core/index.d.ts
+++ b/tools/public_api_guard/core/index.d.ts
@@ -850,13 +850,6 @@ export declare class NgZone {
     static isInAngularZone(): boolean;
 }
 
-/** @deprecated */
-export declare class NgZoneError {
-    error: any;
-    stackTrace: any;
-    constructor(error: any, stackTrace: any);
-}
-
 /** @stable */
 export declare class NoAnnotationError extends BaseException {
     constructor(typeOrFunc: Type<any> | Function, params: any[][]);