diff --git a/tests/combobox-select-only/data/js/openListbox.js b/tests/combobox-select-only/data/js/openListbox.js
index ceade1ff4..e465cba49 100644
--- a/tests/combobox-select-only/data/js/openListbox.js
+++ b/tests/combobox-select-only/data/js/openListbox.js
@@ -1,6 +1,3 @@
 // sets focus on and expands the Combobox
 testPageDocument.querySelector('[role="combobox"]').focus();
-window.setTimeout(onSelectReady, () => {
-	console.log('Opening listbox');
-	window.selectController.updateMenuState(true)
-}, 500);
+testPageDocument.defaultView.selectController.updateMenuState(true);
diff --git a/tests/combobox-select-only/data/js/openListboxToApple.js b/tests/combobox-select-only/data/js/openListboxToApple.js
index 1ddd96981..437fa5d7c 100644
--- a/tests/combobox-select-only/data/js/openListboxToApple.js
+++ b/tests/combobox-select-only/data/js/openListboxToApple.js
@@ -1,4 +1,4 @@
 // sets focus on and expands the Combobox, and sets the focused option to 'Apple'
 testPageDocument.querySelector('[role="combobox"]').focus();
-window.selectController.updateMenuState(true);
-window.selectController.onOptionChange(1);
+testPageDocument.defaultView.selectController.updateMenuState(true);
+testPageDocument.defaultView.selectController.onOptionChange(1);
diff --git a/tests/combobox-select-only/data/js/openListboxToGuava.js b/tests/combobox-select-only/data/js/openListboxToGuava.js
index 650cdb6e8..a83fca9bd 100644
--- a/tests/combobox-select-only/data/js/openListboxToGuava.js
+++ b/tests/combobox-select-only/data/js/openListboxToGuava.js
@@ -1,4 +1,4 @@
 // sets focus on and expands the Combobox, and sets the focused option to 'Guave'
 testPageDocument.querySelector('[role="combobox"]').focus();
-window.selectController.updateMenuState(true);
-window.selectController.onOptionChange(11);
+testPageDocument.defaultView.selectController.updateMenuState(true);
+testPageDocument.defaultView.selectController.onOptionChange(11);
diff --git a/tests/combobox-select-only/data/js/openListboxToHuckleberry.js b/tests/combobox-select-only/data/js/openListboxToHuckleberry.js
index 98e88291e..3c85a7755 100644
--- a/tests/combobox-select-only/data/js/openListboxToHuckleberry.js
+++ b/tests/combobox-select-only/data/js/openListboxToHuckleberry.js
@@ -1,4 +1,4 @@
 // sets focus on and expands the Combobox, and sets the focused option to 'Huckleberry'
 testPageDocument.querySelector('[role="combobox"]').focus();
-window.selectController.updateMenuState(true);
-window.selectController.onOptionChange(2);
+testPageDocument.defaultView.selectController.updateMenuState(true);
+testPageDocument.defaultView.selectController.onOptionChange(12);
diff --git a/tests/combobox-select-only/reference/js/select-only.js b/tests/combobox-select-only/reference/js/select-only.js
index 3158821ab..2398e1b9d 100644
--- a/tests/combobox-select-only/reference/js/select-only.js
+++ b/tests/combobox-select-only/reference/js/select-only.js
@@ -386,5 +386,5 @@ window.addEventListener('load', function () {
     'Huckleberry',
   ];
   const selectEl = document.querySelector('.js-select');
-  window.selectController = new Select(selectEl, options);
+  document.defaultView.selectController = new Select(selectEl, options);
 });