diff --git a/app/assets/images/icons/attachment.svg b/app/assets/images/icons/attachment.svg
new file mode 100644
index 000000000..75d78782d
--- /dev/null
+++ b/app/assets/images/icons/attachment.svg
@@ -0,0 +1 @@
+<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Shape</title><path d="M18.34 7.287L7.038 17.73a3.358 3.358 0 0 1-2.292.877c-.867 0-1.68-.312-2.291-.877a2.867 2.867 0 0 1-.948-2.118c0-.801.337-1.554.948-2.119L14.94 1.954c.785-.725 2.159-.724 2.944 0 .812.751.812 1.972 0 2.722L6.675 15.036c-.33.306-.912.307-1.243 0a.779.779 0 0 1-.258-.574c0-.217.092-.422.258-.575l8.08-7.468a.669.669 0 0 0 .221-.492.67.67 0 0 0-.221-.494.816.816 0 0 0-1.065.001l-8.08 7.469c-.451.416-.699.969-.699 1.559s.248 1.143.698 1.56c.9.83 2.473.832 3.375 0L18.95 5.66C19.627 5.035 20 4.202 20 3.315c0-.886-.373-1.72-1.05-2.345A3.718 3.718 0 0 0 16.412 0c-.959 0-1.86.344-2.538.97L1.389 12.51C.493 13.336 0 14.44 0 15.612c0 1.173.493 2.276 1.39 3.103C2.283 19.544 3.475 20 4.745 20s2.463-.456 3.359-1.284l11.3-10.444a.667.667 0 0 0 .222-.492c0-.187-.08-.361-.222-.493a.818.818 0 0 0-1.065 0z" fill-rule="nonzero" fill="#4393F3"/></svg>
\ No newline at end of file
diff --git a/app/assets/stylesheets/new_design/icons.scss b/app/assets/stylesheets/new_design/icons.scss
index a22cd9afd..fe7d8add2 100644
--- a/app/assets/stylesheets/new_design/icons.scss
+++ b/app/assets/stylesheets/new_design/icons.scss
@@ -48,4 +48,8 @@ i {
   &.bubble {
     background-image: image-url("icons/bubble.svg");
   }
+
+  &.attachment {
+    background-image: image-url("icons/attachment.svg");
+  }
 }
diff --git a/app/assets/stylesheets/new_design/messagerie.scss b/app/assets/stylesheets/new_design/messagerie.scss
index d597ac165..eb5901dfe 100644
--- a/app/assets/stylesheets/new_design/messagerie.scss
+++ b/app/assets/stylesheets/new_design/messagerie.scss
@@ -38,4 +38,8 @@
   .date {
     float: right;
   }
+
+  .attachment-link {
+    margin-top: $default-spacer;
+  }
 }
diff --git a/app/views/new_gestionnaire/dossiers/messagerie.html.haml b/app/views/new_gestionnaire/dossiers/messagerie.html.haml
index 32db9b20c..96699c81c 100644
--- a/app/views/new_gestionnaire/dossiers/messagerie.html.haml
+++ b/app/views/new_gestionnaire/dossiers/messagerie.html.haml
@@ -14,6 +14,11 @@
               %span.guest Invité
             %span.date= I18n.l(commentaire.created_at.localtime, format: '%H:%M le %d/%m/%Y')
           %p= sanitize(commentaire.body)
+          - if file = commentaire.piece_justificative
+            .attachment-link
+              = link_to file.content_url, class: "button", target: "_blank", title: "Télécharger" do
+                %i.attachment
+                = file.original_filename
 
   = form_for(Commentaire.new, url: commentaire_dossier_path(@dossier.procedure, @dossier), html: { class: 'form' }) do |f|
     = f.text_area :body, rows: 5, placeholder: 'Répondre ici', required: true
diff --git a/app/views/root/patron.html.haml b/app/views/root/patron.html.haml
index 5d295de01..438f8de64 100644
--- a/app/views/root/patron.html.haml
+++ b/app/views/root/patron.html.haml
@@ -13,6 +13,7 @@
     %i.edit
     %i.in-progress
     %i.bubble
+    %i.attachment
 
     %h1 Formulaires