diff --git a/posts.py b/posts.py
index ecf31235b..570b10f45 100644
--- a/posts.py
+++ b/posts.py
@@ -6144,7 +6144,7 @@ def edited_post_filename(base_dir: str, nickname: str, domain: str,
         return '', None
     if lastpost_json['type'] != post_json_object['type']:
         return '', None
-    if lastpost_json.get('object'):
+    if not lastpost_json.get('object'):
         return '', None
     if not isinstance(lastpost_json['object'], dict):
         return '', None