diff --git a/modules/angular2/src/core/metadata/directives.ts b/modules/angular2/src/core/metadata/directives.ts
index 6d92529bef..5b534adfbf 100644
--- a/modules/angular2/src/core/metadata/directives.ts
+++ b/modules/angular2/src/core/metadata/directives.ts
@@ -1071,8 +1071,8 @@ export class OutputMetadata {
  * @Directive({selector: '[ngModel]'})
  * class NgModelStatus {
  *   constructor(public control:NgModel) {}
- *   @HostBinding('[class.valid]') get valid { return this.control.valid; }
- *   @HostBinding('[class.invalid]') get invalid { return this.control.invalid; }
+ *   @HostBinding('class.valid') get valid { return this.control.valid; }
+ *   @HostBinding('class.invalid') get invalid { return this.control.invalid; }
  * }
  *
  * @Component({