diff --git a/ablog/post.py b/ablog/post.py
index 26a81fc..27a8c67 100644
--- a/ablog/post.py
+++ b/ablog/post.py
@@ -647,6 +647,7 @@ def generate_atom_feeds(app):
                      updated=post.update, published=post.date)
 
         with open(feed_path, 'w') as out:
+            sys.stderr.write(repr(out) + '\n')
             sys.stderr.write(feed_path + '\n')
             feed_str = text_type(feed.to_string())
             sys.stderr.write(feed_str + '\n')