diff --git a/public/docs/_examples/upgrade-adapter/ts/app/hero-detail.directive.ts b/public/docs/_examples/upgrade-adapter/ts/app/hero-detail.directive.ts
index 09af0685fa..8f595ba38f 100644
--- a/public/docs/_examples/upgrade-adapter/ts/app/hero-detail.directive.ts
+++ b/public/docs/_examples/upgrade-adapter/ts/app/hero-detail.directive.ts
@@ -1,6 +1,7 @@
 // #docregion
 export function heroDetailDirective() {
   return {
+    restrict: 'E',
     scope: {},
     bindToController: {
       hero: '=',