diff --git a/src/Entity/Blog/Comment.php b/src/Entity/Blog/Comment.php
index d6167c8..bbc51db 100644
--- a/src/Entity/Blog/Comment.php
+++ b/src/Entity/Blog/Comment.php
@@ -211,7 +211,10 @@ class Comment implements EntityInterface
      */
     public function getAvatar(): string
     {
-        return 'https://secure.gravatar.com/avatar/'.md5($this->getEmail() ?? 'undefined@undefined').'.jpg?s=90&d=retro';
+        $mail = $this->getEmail() ?? sprintf('%d@deblan.io', $this->getId());
+        $hash = md5($mail);
+
+        return 'https://cdn.libravatar.org/avatar/'.$hash.'?s=90&d=retro';
     }
 
     /**