diff --git a/tests/phpunit/tests/user.php b/tests/phpunit/tests/user.php
index 0f3fb1bcdd..976ef53da7 100644
--- a/tests/phpunit/tests/user.php
+++ b/tests/phpunit/tests/user.php
@@ -159,7 +159,7 @@ class Tests_User extends WP_UnitTestCase {
 		$user->customField = 123;
 		$this->assertEquals( $user->customField, 123 );
 		unset( $user->customField );
-		// $this->assertFalse( isset( $user->customField ) );
+		$this->assertFalse( isset( $user->customField ) );
 		return $user;
 	}