diff --git a/app.py b/app.py
index a739e51..403739a 100644
--- a/app.py
+++ b/app.py
@@ -59,7 +59,7 @@ def page_posts_from_db(target_post_id=None):
     postos  = sorted(postos, key=lambda posto: posto['_key'], reverse=False)
     
     if not target_post_id:
-       target_post_id = postos[0]._key
+       target_post_id = postos[0]['_key']
 
     return render_template("interactive-posts.html", host_id=docker_short_id, postos=postos, target_post_id=target_post_id)