diff --git a/muk_web_preview_mail/tests/test_mail_parse.py b/muk_web_preview_mail/tests/test_mail_parse.py
index a9fc95a..c69082f 100644
--- a/muk_web_preview_mail/tests/test_mail_parse.py
+++ b/muk_web_preview_mail/tests/test_mail_parse.py
@@ -215,6 +215,6 @@ class MailParseTestCase(common.TransactionCase):
         super(MailParseTestCase, self).tearDown()
         
     def test_parse_mail(self):
-        assertTrue(controllers.main.MailParserController().parse_mail('/web/content/%s?download=true' % self.sample_mail_attachment.id))
+        self.assertTrue(controllers.main.MailParserController().parse_mail('/web/content/%s?download=true' % self.sample_mail_attachment.id))
     
         
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