diff --git a/packages/ember-glimmer/tests/integration/helpers/custom-helper-test.js b/packages/ember-glimmer/tests/integration/helpers/custom-helper-test.js
index af8b531df31..d35d953b045 100644
--- a/packages/ember-glimmer/tests/integration/helpers/custom-helper-test.js
+++ b/packages/ember-glimmer/tests/integration/helpers/custom-helper-test.js
@@ -6,24 +6,39 @@ let assert = QUnit.assert;
 
 moduleFor('Helpers test: custom helpers', class extends RenderingTest {
 
-  ['@test it can resolve custom simple helpers']() {
+  ['@test it can resolve custom simple helpers with or without dashes']() {
+    this.registerHelper('hello', () => 'hello');
     this.registerHelper('hello-world', () => 'hello world');
 
-    this.render('{{hello-world}}');
+    this.render('{{hello}} | {{hello-world}}');
+
+    this.assertText('hello | hello world');
+
+    this.runTask(() => this.rerender());
 
-    this.assertText('hello world');
+    this.assertText('hello | hello world');
   }
 
-  ['@test it can resolve custom class-based helpers']() {
+  ['@test it can resolve custom class-based helpers with or without dashes']() {
+    this.registerHelper('hello', {
+      compute() {
+        return 'hello';
+      }
+    });
+
     this.registerHelper('hello-world', {
       compute() {
         return 'hello world';
       }
     });
 
-    this.render('{{hello-world}}');
+    this.render('{{hello}} | {{hello-world}}');
+
+    this.assertText('hello | hello world');
+
+    this.runTask(() => this.rerender());
 
-    this.assertText('hello world');
+    this.assertText('hello | hello world');
   }
 
   ['@htmlbars class-based helper can recompute a new value']() {
diff --git a/packages/ember-htmlbars/tests/integration/helper-lookup-test.js b/packages/ember-htmlbars/tests/integration/helper-lookup-test.js
deleted file mode 100644
index e9f3e00ec37..00000000000
--- a/packages/ember-htmlbars/tests/integration/helper-lookup-test.js
+++ /dev/null
@@ -1,43 +0,0 @@
-import compile from 'ember-template-compiler/system/compile';
-import ComponentLookup from 'ember-views/component_lookup';
-import Component from 'ember-views/components/component';
-import { helper } from 'ember-htmlbars/helper';
-import { runAppend, runDestroy } from 'ember-runtime/tests/utils';
-import buildOwner from 'container/tests/test-helpers/build-owner';
-import { OWNER } from 'container/owner';
-
-var owner, component;
-
-QUnit.module('component - invocation', {
-  setup() {
-    owner = buildOwner();
-    owner.registerOptionsForType('component', { singleton: false });
-    owner.registerOptionsForType('view', { singleton: false });
-    owner.registerOptionsForType('template', { instantiate: false });
-    owner.registerOptionsForType('helper', { instantiate: false });
-    owner.register('component-lookup:main', ComponentLookup);
-  },
-
-  teardown() {
-    runDestroy(owner);
-    runDestroy(component);
-    owner = component = null;
-  }
-});
-
-QUnit.test('non-dashed helpers are found', function() {
-  expect(1);
-
-  owner.register('helper:fullname', helper(function( [first, last]) {
-    return `${first} ${last}`;
-  }));
-
-  component = Component.extend({
-    [OWNER]: owner,
-    layout: compile('{{fullname "Robert" "Jackson"}}')
-  }).create();
-
-  runAppend(component);
-
-  equal(component.$().text(), 'Robert Jackson');
-});