diff --git a/tests/regressiontests/mail/tests.py b/tests/regressiontests/mail/tests.py
index c948662bc3..3e9ae84650 100644
--- a/tests/regressiontests/mail/tests.py
+++ b/tests/regressiontests/mail/tests.py
@@ -553,6 +553,8 @@ class FileBackendTests(BaseEmailBackendTests, TestCase):
         msg.send()
         self.assertEqual(len(os.listdir(self.tmp_dir)), 3)
 
+        connection.close()
+
 
 class ConsoleBackendTests(BaseEmailBackendTests, TestCase):
     email_backend = 'django.core.mail.backends.console.EmailBackend'