diff --git a/app/models/commentaire.rb b/app/models/commentaire.rb
index d62e87eac..cf88b094a 100644
--- a/app/models/commentaire.rb
+++ b/app/models/commentaire.rb
@@ -4,6 +4,8 @@ class Commentaire < ActiveRecord::Base
 
   belongs_to :piece_justificative
 
+  scope :ordered, -> { order(created_at: :asc) }
+
   after_create :notify
 
   def header
diff --git a/app/views/new_gestionnaire/dossiers/messagerie.html.haml b/app/views/new_gestionnaire/dossiers/messagerie.html.haml
index 1754f5b9d..8036e10d4 100644
--- a/app/views/new_gestionnaire/dossiers/messagerie.html.haml
+++ b/app/views/new_gestionnaire/dossiers/messagerie.html.haml
@@ -2,7 +2,7 @@
 
 #dossier-messagerie.container
   %ul
-    - @dossier.commentaires.each do |commentaire|
+    - @dossier.commentaires.ordered.each do |commentaire|
       %li
         = render partial: 'commentaire_icon', locals: { commentaire: commentaire, current_gestionnaire: current_gestionnaire }