diff --git a/webapp_post.py b/webapp_post.py
index c5386fbef..6b29107d2 100644
--- a/webapp_post.py
+++ b/webapp_post.py
@@ -1548,11 +1548,13 @@ def _get_post_title_reply_html(base_dir: str,
             if obj_json.get('attributedTo'):
                 if isinstance(obj_json['attributedTo'], str):
                     reply_actor = obj_json['attributedTo']
+                    in_reply_to = reply_actor
             elif obj_json != reply_post_json:
                 obj_json = reply_post_json
                 if obj_json.get('attributedTo'):
                     if isinstance(obj_json['attributedTo'], str):
                         reply_actor = obj_json['attributedTo']
+                        in_reply_to = reply_actor
 
         if post_domain and not reply_actor:
             title_str += \