diff --git a/modules/angular2/src/facade/lang.dart b/modules/angular2/src/facade/lang.dart
index 7229b3233d..ac0d31e6b2 100644
--- a/modules/angular2/src/facade/lang.dart
+++ b/modules/angular2/src/facade/lang.dart
@@ -176,8 +176,10 @@ class FunctionWrapper {
 
 class BaseException extends Error {
   final String message;
+  final originalException;
+  final originalStack;
 
-  BaseException([this.message]);
+  BaseException([this.message, this.originalException, this.originalStack]);
 
   String toString() {
     return this.message;
diff --git a/modules/angular2/src/facade/lang.ts b/modules/angular2/src/facade/lang.ts
index 6178ce9696..84c7b939ff 100644
--- a/modules/angular2/src/facade/lang.ts
+++ b/modules/angular2/src/facade/lang.ts
@@ -6,11 +6,9 @@ export var Type = Function;
 export type Type = new (...args: any[]) => any;
 
 export class BaseException extends Error {
-  message;
   stack;
-  constructor(message?: string) {
+  constructor(public message?: string, public originalException?, public originalStack?) {
     super(message);
-    this.message = message;
     this.stack = (<any>new Error(message)).stack;
   }