--- a/toolkit/components/passwordmgr/test/browser/browser_notifications_2.js
+++ b/toolkit/components/passwordmgr/test/browser/browser_notifications_2.js
@@ -1,8 +1,14 @@
+add_task(function* setup() {
+  yield SpecialPowers.pushPrefEnv({"set": [
+    ["signon.rememberSignons.visibilityToggle", true]
+  ]});
+});
+
 /**
  * Test that the doorhanger main action button is disabled
  * when the password field is empty.
  *
  * Also checks that submiting an empty password throws an error.
  */
 add_task(function* test_empty_password() {
   yield BrowserTestUtils.withNewTab({