diff --git a/helpdesk/lib.py b/helpdesk/lib.py
index 05e80dfd..f9adb174 100644
--- a/helpdesk/lib.py
+++ b/helpdesk/lib.py
@@ -136,7 +136,7 @@ def process_attachments(followup, attached_files):
 
         if attached.size:
             filename = smart_text(attached.name)
-            att = followup.followupattachment_set(
+            att = followup.followupattachment_set.create(
                 file=attached,
                 filename=filename,
                 mime_type=attached.content_type or
diff --git a/helpdesk/tests/test_attachments.py b/helpdesk/tests/test_attachments.py
index 942a2353..82983e68 100644
--- a/helpdesk/tests/test_attachments.py
+++ b/helpdesk/tests/test_attachments.py
@@ -147,7 +147,7 @@ class AttachmentUnitTests(TestCase):
         self.assertEqual(obj.size, len(self.file_attrs['content']))
         self.assertEqual(obj.mime_type, "text/plain")
 
-    @mock.patch.object(lib.FollowUpAttachment, 'save', autospec=True)
+    @mock.patch.object('helpdesk.lib.FollowUpAttachment', 'save', autospec=True)
     @override_settings(MEDIA_ROOT=MEDIA_DIR)
     def test_unicode_filename_to_filesystem(self, mock_att_save, mock_queue_save, mock_ticket_save, mock_follow_up_save):
         """ don't mock saving to filesystem to test file renames caused by storage layer """