diff --git a/browser/base/content/test/performance/browser_tabopen_reflows.js b/browser/base/content/test/performance/browser_tabopen_reflows.js
index 2a84b7cfcce8..ff08cdb4dc50 100644
--- a/browser/base/content/test/performance/browser_tabopen_reflows.js
+++ b/browser/base/content/test/performance/browser_tabopen_reflows.js
@@ -18,7 +18,6 @@ const EXPECTED_REFLOWS = [
   [
     "select@chrome://global/content/bindings/textbox.xml",
     "focusAndSelectUrlBar@chrome://browser/content/browser.js",
-    "_adjustFocusAfterTabSwitch@chrome://browser/content/tabbrowser.xml",
   ],
 
   // selection change notification may cause querying the focused editor content
@@ -26,13 +25,11 @@ const EXPECTED_REFLOWS = [
   [
     "select@chrome://global/content/bindings/textbox.xml",
     "focusAndSelectUrlBar@chrome://browser/content/browser.js",
-    "_adjustFocusAfterTabSwitch@chrome://browser/content/tabbrowser.xml",
   ],
 
   [
     "select@chrome://global/content/bindings/textbox.xml",
     "focusAndSelectUrlBar@chrome://browser/content/browser.js",
-    "_adjustFocusAfterTabSwitch@chrome://browser/content/tabbrowser.xml",
   ],
 ];