diff --git a/app/serializers/commentaire_serializer.rb b/app/serializers/commentaire_serializer.rb
index 2941765e2..94f652147 100644
--- a/app/serializers/commentaire_serializer.rb
+++ b/app/serializers/commentaire_serializer.rb
@@ -2,9 +2,18 @@ class CommentaireSerializer < ActiveModel::Serializer
   attributes :email,
     :body,
     :created_at,
-    :piece_jointe_attachments
+    :piece_jointe_attachments,
+    :attachment
 
   def created_at
     object.created_at&.in_time_zone('UTC')
   end
+
+  def attachment
+    piece_jointe = object.piece_jointe_attachments.first
+
+    if piece_jointe&.virus_scanner&.safe?
+      Rails.application.routes.url_helpers.url_for(piece_jointe)
+    end
+  end
 end