diff --git a/tests/MailFunc.php b/tests/MailFunc.php
index 4c3b77ff4..4c9d685bf 100644
--- a/tests/MailFunc.php
+++ b/tests/MailFunc.php
@@ -252,8 +252,7 @@ class MailFunc extends PHPUnit\Framework\TestCase
$body = rcmail_print_body($html, $this->get_html_part(), array('safe' => false, 'plain' => false));
$this->assertNotContains('href="/"', $body);
- $this->assertContains('assertContains('onclick="return false"', $body);
+ $this->assertContains('', $body);
$html = 'test';
$body = rcmail_print_body($html, $this->get_html_part(), array('safe' => false, 'plain' => false));