diff --git a/app/views/new_administrateur/procedure_administrateurs/_add_admin_form.html.haml b/app/views/new_administrateur/procedure_administrateurs/_add_admin_form.html.haml
index 67c79d745..14692df28 100644
--- a/app/views/new_administrateur/procedure_administrateurs/_add_admin_form.html.haml
+++ b/app/views/new_administrateur/procedure_administrateurs/_add_admin_form.html.haml
@@ -1,4 +1,4 @@
-= form_for procedure.administrateurs.new,
+= form_for procedure.administrateurs.new(user: User.new),
   url: { controller: 'procedure_administrateurs' },
   html: { class: 'form', id:  "procedure-#{procedure.id}-new_administrateur" } ,
   remote: true do |f|
diff --git a/spec/features/admin/procedure_update_spec.rb b/spec/features/admin/procedure_update_spec.rb
index f2d09565a..7fc165ab3 100644
--- a/spec/features/admin/procedure_update_spec.rb
+++ b/spec/features/admin/procedure_update_spec.rb
@@ -59,4 +59,18 @@ feature 'Administrateurs can edit procedures', js: true do
       expect(page).to have_field('procedure_libelle', with: 'Ma petite démarche')
     end
   end
+
+  scenario 'the administrator can add another administrator' do
+    another_administrateur = create(:administrateur)
+    visit admin_procedure_path(procedure)
+    click_on 'Administrateurs'
+
+    fill_in('administrateur_email', with: another_administrateur.email)
+
+    click_on 'Ajouter comme administrateur'
+
+    within('.alert-success') do
+      expect(page).to have_content(another_administrateur.email)
+    end
+  end
 end