diff --git a/fail2ban/tests/action_d/test_smtp.py b/fail2ban/tests/action_d/test_smtp.py
index 7cd4edf3..dbad4493 100644
--- a/fail2ban/tests/action_d/test_smtp.py
+++ b/fail2ban/tests/action_d/test_smtp.py
@@ -23,6 +23,7 @@ import asyncore
 import threading
 import unittest
 import sys
+from textwrap import wrap
 if sys.version_info >= (3, 3):
 	import importlib
 else:
@@ -100,9 +101,11 @@ class SMTPActionTest(unittest.TestCase):
 		self.action.ban(aInfo)
 		self.assertEqual(self.smtpd.mailfrom, "fail2ban")
 		self.assertEqual(self.smtpd.rcpttos, ["root"])
-		self.assertTrue(
+		subject = "\n".join(wrap(
 			"Subject: [Fail2Ban] %s: banned %s" %
-				(self.jail.name, aInfo['ip']) in self.smtpd.data)
+				(self.jail.name, aInfo['ip']),
+			78, subsequent_indent=" "))
+		self.assertTrue(subject in self.smtpd.data)
 		self.assertTrue(
 			"%i attempts" % aInfo['failures'] in self.smtpd.data)