diff --git a/app/templates/widgets/thread.html b/app/templates/widgets/thread.html
index e0a0c57..b5cf1e1 100644
--- a/app/templates/widgets/thread.html
+++ b/app/templates/widgets/thread.html
@@ -22,8 +22,10 @@
 
             {{ widget_attachments.attachments(c) }}
 
-            <hr style="opacity:0.2;">
-            {{ c.author.signature|md }}
+            {% if c.author.signature != "" %}
+              <hr style="opacity:0.2;">
+              {{ c.author.signature|md }}
+            {% endif %}
     {% elif loop.index0 != 0 %}
         <div>Ce message est le top comment</div>
     {% endif %}