diff --git a/modules/angular2/src/core/zone/ng_zone.ts b/modules/angular2/src/core/zone/ng_zone.ts
index 0e03295df3..7d59044c0d 100644
--- a/modules/angular2/src/core/zone/ng_zone.ts
+++ b/modules/angular2/src/core/zone/ng_zone.ts
@@ -9,7 +9,7 @@ export interface NgZoneZone extends Zone { _innerZone: boolean; }
  * A wrapper around zones that lets you schedule tasks after it has executed a task.
  *
  * The wrapper maintains an "inner" and an "mount" `Zone`. The application code will executes
- * in the "inner" zone unless `runOutsideAngular` is explicitely called.
+ * in the "inner" zone unless `runOutsideAngular` is explicitly called.
  *
  * A typical application will create a singleton `NgZone`. The outer `Zone` is a fork of the root
  * `Zone`. The default `onTurnDone` runs the Angular change detection.