diff --git a/mail/test/browser/newmailaccount/browser_newmailaccount.js b/mail/test/browser/newmailaccount/browser_newmailaccount.js
index d303cbc8e2..9141885f15 100644
--- a/mail/test/browser/newmailaccount/browser_newmailaccount.js
+++ b/mail/test/browser/newmailaccount/browser_newmailaccount.js
@@ -256,7 +256,7 @@ add_task(async function test_account_creation_from_provisioner() {
   await BrowserTestUtils.waitForCondition(
     () =>
       mc.tabmail.selectedTab.browser.contentWindow.gAccountSetup
-        ._currentModename == "success",
+        ?._currentModename == "success",
     "The success view was shown"
   );