diff --git a/browser/base/content/test/pageActions/browser_page_action_menu.js b/browser/base/content/test/pageActions/browser_page_action_menu.js
index b11d372e5bc4..11056268490b 100644
--- a/browser/base/content/test/pageActions/browser_page_action_menu.js
+++ b/browser/base/content/test/pageActions/browser_page_action_menu.js
@@ -848,7 +848,7 @@ add_task(async function contextMenu() {
   // urlbar tests that run after this one can break if the mouse is left over
   // the area where the urlbar popup appears, which seems to happen due to the
   // above synthesized mouse events.  Move it over the urlbar.
-  EventUtils.synthesizeMouseAtCenter(gURLBar, { type: "mousemove" });
+  EventUtils.synthesizeMouseAtCenter(gURLBar.textbox, { type: "mousemove" });
   gURLBar.focus();
 });
 
diff --git a/browser/base/content/test/sidebar/browser_sidebar_keys.js b/browser/base/content/test/sidebar/browser_sidebar_keys.js
index db92ceed644b..6bfbfe3e1beb 100644
--- a/browser/base/content/test/sidebar/browser_sidebar_keys.js
+++ b/browser/base/content/test/sidebar/browser_sidebar_keys.js
@@ -2,7 +2,7 @@
  * http://creativecommons.org/publicdomain/zero/1.0/ */
 
 async function testSidebarKeyToggle(key, options, expectedSidebarId) {
-  EventUtils.synthesizeMouseAtCenter(gURLBar, {});
+  EventUtils.synthesizeMouseAtCenter(gURLBar.textbox, {});
   let promiseShown = BrowserTestUtils.waitForEvent(window, "SidebarShown");
   EventUtils.synthesizeKey(key, options);
   await promiseShown;