diff --git a/core/modules/user/tests/src/Functional/UserLoginTest.php b/core/modules/user/tests/src/Functional/UserLoginTest.php
index 4522293286..d393c99932 100644
--- a/core/modules/user/tests/src/Functional/UserLoginTest.php
+++ b/core/modules/user/tests/src/Functional/UserLoginTest.php
@@ -171,7 +171,7 @@ public function testPasswordLengthLogin() {
     $session->pageTextContains('Member for');
 
     $this->doPasswordLengthLogin($account, $current_password, $length + 1);
-    $session->pageTextContains('Password cannot be longer than '. $length .' characters but is currently '. $length + 1 .' characters long.');
+    $session->pageTextContains('Password cannot be longer than '. $length .' characters but is currently '. ($length+1) .' characters long.');
     $session->pageTextNotContains('Member for');
   }