diff --git a/app/controllers/administrateurs/procedures_controller.rb b/app/controllers/administrateurs/procedures_controller.rb
index c8c59adbf..1e50c6130 100644
--- a/app/controllers/administrateurs/procedures_controller.rb
+++ b/app/controllers/administrateurs/procedures_controller.rb
@@ -351,7 +351,7 @@ module Administrateurs
         :monavis_embed,
         :api_entreprise_token,
         :duree_conservation_dossiers_dans_ds,
-        :zone_id,
+        { zone_ids: [] },
         :lien_dpo,
         :opendata,
         :procedure_expires_when_termine_enabled
diff --git a/app/helpers/zone_helper.rb b/app/helpers/zone_helper.rb
deleted file mode 100644
index 5275c9899..000000000
--- a/app/helpers/zone_helper.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-module ZoneHelper
-  def grouped_options_for_zone(date)
-    date ||= Time.zone.now
-    collectivite = Zone.find_by(acronym: "COLLECTIVITE")
-    {
-      "--" => [
-        [I18n.t('i_dont_know', scope: 'utils'), nil],
-        [collectivite.label, collectivite.id]
-      ],
-    I18n.t('ministeres', scope: 'zones') => (Zone.available_at(date) - [collectivite]).map { |m| [m.label_at(date), m.id] }
-    }
-  end
-end
diff --git a/app/models/zone.rb b/app/models/zone.rb
index aa13a174b..5d34310da 100644
--- a/app/models/zone.rb
+++ b/app/models/zone.rb
@@ -28,5 +28,8 @@ class Zone < ApplicationRecord
 
   def self.available_at(date)
     Zone.all.filter { |zone| zone.available_at?(date) }.sort_by { |zone| zone.label_at(date) }
+      .map do |zone|
+      OpenStruct.new(id: zone.id, label: zone.label_at(date))
+    end
   end
 end
diff --git a/app/views/administrateurs/procedures/_informations.html.haml b/app/views/administrateurs/procedures/_informations.html.haml
index 695584dba..b3c8c8e5b 100644
--- a/app/views/administrateurs/procedures/_informations.html.haml
+++ b/app/views/administrateurs/procedures/_informations.html.haml
@@ -14,10 +14,10 @@
 = f.text_area :description, rows: '6', placeholder: 'Description de la démarche, destinataires, etc. ', class: 'form-control'
 
 - if Flipper.enabled? :zonage
-  = f.label :zone do
-    = t('zone', scope: 'activerecord.attributes.procedure')
-    %span.mandatory *
-  = f.select :zone_id, grouped_options_for_zone(@procedure.published_or_created_at)
+  = f.collection_check_boxes :zone_ids, Zone.available_at(@procedure.published_or_created_at), :id, :label do |b|
+    .editable-champ.editable-champ-checkbox
+      = b.check_box
+      = b.label
 
 %h3.header-subsection Logo de la démarche
 = render Attachment::EditComponent.new(form: f, attached_file: @procedure.logo, direct_upload: true, user_can_destroy: true)
diff --git a/spec/models/zone_spec.rb b/spec/models/zone_spec.rb
index 0d31d7721..085c4bb2e 100644
--- a/spec/models/zone_spec.rb
+++ b/spec/models/zone_spec.rb
@@ -114,8 +114,8 @@ describe Zone do
     end
 
     it 'returns only available zones at specific date' do
-      expect(Zone.available_at(start_last_government + 1.day)).to eq [culture]
-      expect(Zone.available_at(start_previous_government + 1.day)).to eq [culture, om]
+      expect(Zone.available_at(start_last_government + 1.day).map(&:label)).to eq ["Ministère de la Culture"]
+      expect(Zone.available_at(start_previous_government + 1.day).map(&:label)).to eq ["Ministère de la Culture", "Ministère des Outre-mer"]
     end
   end
 end