From 1946991928c7d5e3d9a488e35b0c47812a5c67b9 Mon Sep 17 00:00:00 2001
From: Paul J Stevens <paul@nfg.nl>
Date: Tue, 4 Jun 2013 09:18:40 -0400
Subject: [PATCH] fix regression

introduced by 702f7e1f1d7c2d50621f2f326c185ddb2034d174
---
 plone/app/discussion/comment.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/plone/app/discussion/comment.py b/plone/app/discussion/comment.py
index 9d9b1e1..df81bf7 100644
--- a/plone/app/discussion/comment.py
+++ b/plone/app/discussion/comment.py
@@ -93,7 +93,7 @@ class Comment(CatalogAware, WorkflowAware, DynamicType, Traversable,
 
     title = u""
 
-    mime_type = "text/plain"
+    mime_type = None
     text = u""
 
     creator = None
@@ -113,6 +113,7 @@ class Comment(CatalogAware, WorkflowAware, DynamicType, Traversable,
 
     def __init__(self):
         self.creation_date = self.modification_date = datetime.utcnow()
+        self.mime_type = 'text/plain'
 
     @property
     def __name__(self):