diff --git a/aio/content/examples/form-validation/src/app/shared/forbidden-name.directive.ts b/aio/content/examples/form-validation/src/app/shared/forbidden-name.directive.ts
index 277a31bd33..a3fefbaa72 100644
--- a/aio/content/examples/form-validation/src/app/shared/forbidden-name.directive.ts
+++ b/aio/content/examples/form-validation/src/app/shared/forbidden-name.directive.ts
@@ -14,7 +14,7 @@ export function forbiddenNameValidator(nameRe: RegExp): ValidatorFn {
 
 // #docregion directive
 @Directive({
-  selector: '[appForbiddenName]',
+  selector: '[forbiddenName]',
   // #docregion directive-providers
   providers: [{provide: NG_VALIDATORS, useExisting: ForbiddenValidatorDirective, multi: true}]
   // #enddocregion directive-providers