diff --git a/app/controllers/champs/dossier_link_controller.rb b/app/controllers/champs/dossier_link_controller.rb
index d4297c733..1ba3823e1 100644
--- a/app/controllers/champs/dossier_link_controller.rb
+++ b/app/controllers/champs/dossier_link_controller.rb
@@ -2,6 +2,8 @@ class Champs::DossierLinkController < ApplicationController
   before_action :authenticate_logged_user!
 
   def show
+    @position = params[:position]
+
     if params[:dossier].key?(:champs_attributes)
       @dossier_id = params[:dossier][:champs_attributes][params[:position]][:value]
     else
diff --git a/app/views/champs/dossier_link/show.js.erb b/app/views/champs/dossier_link/show.js.erb
index d561ee26a..dece3758a 100644
--- a/app/views/champs/dossier_link/show.js.erb
+++ b/app/views/champs/dossier_link/show.js.erb
@@ -1,3 +1,3 @@
-<%= render_to_element('.dossier-link .help-block',
+<%= render_to_element(".dossier-link-#{@position} .help-block",
   partial: 'shared/champs/dossier_link/help_block',
   locals: { id: @dossier_id }) %>
diff --git a/app/views/shared/dossiers/editable_champs/_dossier_link.html.haml b/app/views/shared/dossiers/editable_champs/_dossier_link.html.haml
index 40d830ad8..37e67954c 100644
--- a/app/views/shared/dossiers/editable_champs/_dossier_link.html.haml
+++ b/app/views/shared/dossiers/editable_champs/_dossier_link.html.haml
@@ -1,4 +1,4 @@
-.dossier-link
+.dossier-link{ class: "dossier-link-#{form.index}" }
   = form.number_field :value,
     placeholder: "Numéro de dossier",
     autocomplete: 'off',
diff --git a/spec/controllers/champs/dossier_link_controller_spec.rb b/spec/controllers/champs/dossier_link_controller_spec.rb
index f2f5be448..f4cda12de 100644
--- a/spec/controllers/champs/dossier_link_controller_spec.rb
+++ b/spec/controllers/champs/dossier_link_controller_spec.rb
@@ -28,10 +28,11 @@ describe Champs::DossierLinkController, type: :controller do
           get :show, params: params, format: 'js'
         }
 
-        it 'returns the procedure name' do
+        it 'renders the procedure name' do
           expect(response.body).to include('Dossier en brouillon')
           expect(response.body).to include(procedure.libelle)
           expect(response.body).to include(procedure.organisation)
+          expect(response.body).to include('.dossier-link-1 .help-block')
         end
       end
 
@@ -41,7 +42,10 @@ describe Champs::DossierLinkController, type: :controller do
           get :show, params: params, format: 'js'
         }
 
-        it { expect(response.body).to include('Ce dossier est inconnu') }
+        it 'renders error message' do
+          expect(response.body).to include('Ce dossier est inconnu')
+          expect(response.body).to include('.dossier-link-1 .help-block')
+        end
       end
     end