diff --git a/modules/angular2/src/core/life_cycle/life_cycle.js b/modules/angular2/src/core/life_cycle/life_cycle.js
index b6fd82c7d1..88d30bd85c 100644
--- a/modules/angular2/src/core/life_cycle/life_cycle.js
+++ b/modules/angular2/src/core/life_cycle/life_cycle.js
@@ -43,6 +43,9 @@ export class LifeCycle {
     this._enforceNoNewChanges = enforceNoNewChanges;
   }
 
+  /**
+   * @private
+   */
   registerWith(zone:VmTurnZone, changeDetector:ChangeDetector = null) {
     if (isPresent(changeDetector)) {
       this._changeDetector=changeDetector;