diff --git a/app/routes/forum/topic.py b/app/routes/forum/topic.py
index 6a3f2e3..c5dab42 100644
--- a/app/routes/forum/topic.py
+++ b/app/routes/forum/topic.py
@@ -1,5 +1,6 @@
 from flask_login import current_user
 from flask import redirect, url_for, flash, abort
+from sqlalchemy import desc
 
 from app import app, db
 from config import V5Config
@@ -10,7 +11,7 @@ from app.models.comment import Comment
 from app.models.user import Guest
 from app.models.attachment import Attachment
 
-import datetime
+from datetime import datetime
 
 
 @app.route('/forum/<forum:f>/<topicpage:page>', methods=['GET', 'POST'])
@@ -59,7 +60,7 @@ def forum_topic(f, page):
         flash('Message envoyé', 'ok')
         # Redirect to empty the form
         return redirect(url_for('forum_topic', f=f, page=(t, "fin"),
-                                _anchor=c.id))
+            _anchor=c.id))
 
     # Update views
     t.views += 1
@@ -70,9 +71,12 @@ def forum_topic(f, page):
         page = (t.thread.comments.count() - 1) // Thread.COMMENTS_PER_PAGE + 1
 
     comments = t.thread.comments.paginate(page,
-                                          Thread.COMMENTS_PER_PAGE, True)
+        Thread.COMMENTS_PER_PAGE, True)
 
-    now_minus = datetime.datetime.now() - datetime.timedelta(days=V5Config.NECROPOST_LIMIT)
-    last_updated_comment = t.thread.comments.filter(Comment.date_modified <= now_minus).first()
+    # Anti-necropost
+    last_com = t.thread.comments.order_by(desc(Comment.date_modified)).first()
+    inactive = datetime.now() - last_com.date_modified
+    outdated = inactive.days if inactive >= V5Config.NECROPOST_LIMIT else None
 
-    return render('/forum/topic.html', t=t, form=form, comments=comments, last=last_updated_comment)
+    return render('/forum/topic.html', t=t, form=form, comments=comments,
+        outdated=outdated)
diff --git a/app/templates/forum/topic.html b/app/templates/forum/topic.html
index 8353ae5..657f6a7 100644
--- a/app/templates/forum/topic.html
+++ b/app/templates/forum/topic.html
@@ -19,10 +19,9 @@
 
     {{ widget_pagination.paginate(comments, 'forum_topic', t, {'f': t.forum}) }}
 
-    {% if last %}
+    {% if outdated %}
     <div class="bg-warn">
-        Ce topic est sans activité depuis plus de X jours, êtes-vous sûr de vouloir y poster ?
-        {{ last }}
+        Ce topic est sans activité depuis plus de {{ outdated }} jours, êtes-vous sûr de vouloir y poster ?
     </div>
     {% endif %}
 
diff --git a/config.py b/config.py
index 7110ba9..b666f25 100644
--- a/config.py
+++ b/config.py
@@ -1,4 +1,5 @@
 import os
+from datetime import timedelta
 
 try:
     from local_config import LocalConfig
@@ -52,8 +53,8 @@ class DefaultConfig(object):
     # GLaDOS configuration
     GLADOS_HOST = "127.0.0.1"
     GLADOS_PORT = 5555
-    # Time in days before trigerring the nec
-    NECROPOST_LIMIT = 31
+    # Time before trigerring the necropost alert
+    NECROPOST_LIMIT = timedelta(days=31)
 
 
 class V5Config(LocalConfig, DefaultConfig):