diff --git a/modules/@angular/core/src/metadata/lifecycle_hooks.ts b/modules/@angular/core/src/metadata/lifecycle_hooks.ts
index 594bcc63fe..4ec2b8c37f 100644
--- a/modules/@angular/core/src/metadata/lifecycle_hooks.ts
+++ b/modules/@angular/core/src/metadata/lifecycle_hooks.ts
@@ -29,7 +29,7 @@ export enum LifecycleHooks {
  */
 export interface SimpleChanges { [propName: string]: SimpleChange; }
 
-export var LIFECYCLE_HOOKS_VALUES = [
+export const LIFECYCLE_HOOKS_VALUES = [
   LifecycleHooks.OnInit, LifecycleHooks.OnDestroy, LifecycleHooks.DoCheck, LifecycleHooks.OnChanges,
   LifecycleHooks.AfterContentInit, LifecycleHooks.AfterContentChecked, LifecycleHooks.AfterViewInit,
   LifecycleHooks.AfterViewChecked
@@ -92,7 +92,7 @@ export abstract class OnInit { abstract ngOnInit(): void; }
 export abstract class DoCheck { abstract ngDoCheck(): void; }
 
 /**
- * @whatItDoes Lifecycle hook that is called when a directive or pipe is destroyed.
+ * @whatItDoes Lifecycle hook that is called when a directive, pipe or service is destroyed.
  * @howToUse
  * {@example core/ts/metadata/lifecycle_hooks_spec.ts region='OnDestroy'}
  *