diff -u b/core/modules/toolbar/tests/src/FunctionalJavascript/ToolbarIntegrationTest.php b/core/modules/toolbar/tests/src/FunctionalJavascript/ToolbarIntegrationTest.php
--- b/core/modules/toolbar/tests/src/FunctionalJavascript/ToolbarIntegrationTest.php
+++ b/core/modules/toolbar/tests/src/FunctionalJavascript/ToolbarIntegrationTest.php
@@ -55,7 +55,7 @@
   }
 
   /**
-   * Tests a toolbar with the first item being only an item.
+   * Tests a toolbar with the first item not being a tab.
    */
   public function testToolbarItem() {
     \Drupal::state()->set('toolbar_test__testing_item_enabled', TRUE);
@@ -71,7 +71,7 @@
 
     $session = $this->getSession();
     $result = $session->evaluateScript("Drupal.toolbar.models.toolbarModel.get('activeTab');");
-    // Ensure that there is not active tab by default.
+    // Ensure that there is no active tab by default.
     $this->assertNull($result);
   }