diff --git a/app/javascript/new_design/procedure-form.js b/app/javascript/new_design/procedure-form.js
index 770d19fcd..5ff78a9d4 100644
--- a/app/javascript/new_design/procedure-form.js
+++ b/app/javascript/new_design/procedure-form.js
@@ -12,10 +12,21 @@ function syncFormToPreview() {
   syncInputToElement('#procedure_libelle', '.procedure-title');
   syncInputToElement('#procedure_description', '.procedure-description-body');
   syncInputToElement('#procedure_description_what', '.js_description_what p');
-  syncInputToElement('#procedure_description_for_who', '.js_description_for_who p');
+  syncInputToElement(
+    '#procedure_description_for_who',
+    '.js_description_for_who p'
+  );
 }
 
 delegate('input', '.procedure-form #procedure_libelle', syncFormToPreview);
 delegate('input', '.procedure-form #procedure_description', syncFormToPreview);
-delegate('input', '.procedure-form #procedure_description_what', syncFormToPreview);
-delegate('input', '.procedure-form #procedure_description_for_who', syncFormToPreview);
+delegate(
+  'input',
+  '.procedure-form #procedure_description_what',
+  syncFormToPreview
+);
+delegate(
+  'input',
+  '.procedure-form #procedure_description_for_who',
+  syncFormToPreview
+);
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index 053dfa68f..04c52ecf1 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -282,8 +282,8 @@ class Procedure < ApplicationRecord
   }
 
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
-  validates :description, presence: true, allow_blank: false, allow_nil: false, if: -> { description_what.nil? && description_for_who.nil?}
-  validates :description_what, :description_for_who, presence: true, allow_blank: false, allow_nil: false, if: -> { description.nil?}
+  validates :description, presence: true, allow_blank: false, allow_nil: false, if: -> { description_what.nil? && description_for_who.nil? }
+  validates :description_what, :description_for_who, presence: true, allow_blank: false, allow_nil: false, if: -> { description.nil? }
   validates :administrateurs, presence: true
   validates :lien_site_web, presence: true, if: :publiee?
   validates :draft_types_de_champ_public,
diff --git a/app/views/layouts/procedure_context.html.haml b/app/views/layouts/procedure_context.html.haml
index 9de8f65fb..74b6bc0d8 100644
--- a/app/views/layouts/procedure_context.html.haml
+++ b/app/views/layouts/procedure_context.html.haml
@@ -9,6 +9,7 @@
             = render partial: 'shared/procedure_description', locals: { procedure: procedure }
           - else
             = render partial: 'layouts/commencer/no_procedure'
+            = yield
 
 - content_for :footer do
   - if procedure
diff --git a/app/views/shared/_procedure_description.html.haml b/app/views/shared/_procedure_description.html.haml
index 46c27e301..c5b799a19 100644
--- a/app/views/shared/_procedure_description.html.haml
+++ b/app/views/shared/_procedure_description.html.haml
@@ -37,12 +37,12 @@
     .fr-accordions-group
       %section.fr-accordion
         %h3.fr-accordion__title
-          %button.fr-accordion__btn{"aria-controls" => "accordion-114", "aria-expanded" => "true"} Quel est l’objet de cette démarche ?
+          %button.fr-accordion__btn{ "aria-controls" => "accordion-114", "aria-expanded" => "true" } Quel est l’objet de cette démarche ?
         #accordion-114.fr-collapse.js_description_what
           = h render SimpleFormatComponent.new(procedure.description_what, allow_a: true)
 
       %section.fr-accordion
         %h3.fr-accordion__title
-          %button.fr-accordion__btn{"aria-controls" => "accordion-115", "aria-expanded" => "false"} À qui s’adresse la démarche ?
+          %button.fr-accordion__btn{ "aria-controls" => "accordion-115", "aria-expanded" => "false" } À qui s’adresse la démarche ?
         #accordion-115.fr-collapse.js_description_for_who
           = h render SimpleFormatComponent.new(procedure.description_for_who, allow_a: true)
diff --git a/spec/models/procedure_spec.rb b/spec/models/procedure_spec.rb
index df79d17ab..1553978f3 100644
--- a/spec/models/procedure_spec.rb
+++ b/spec/models/procedure_spec.rb
@@ -178,9 +178,26 @@ describe Procedure do
     end
 
     context 'description' do
-      it { is_expected.not_to allow_value(nil).for(:description) }
-      it { is_expected.not_to allow_value('').for(:description) }
-      it { is_expected.to allow_value('Description Demande de subvention').for(:description) }
+      context 'description can not be nil if description_what and description_for_who are nil too' do
+        let(:procedure) { build(:procedure, description: nil) }
+        it { is_expected.to allow_value('Description Demande de subvention').for(:description) }
+        it { expect(procedure.valid?).to eq(false) }
+      end
+
+      context 'description can be nil if description_what and description_for_who are filled' do
+        let(:procedure) { build(:procedure, description: nil, description_for_who: 'for who', description_what: 'what') }
+        it { expect(procedure.valid?).to eq(true) }
+      end
+
+      context 'description_what and description_for_who can not be nil if description is nil too' do
+        let(:procedure) { build(:procedure, description: nil) }
+        it { expect(procedure.valid?).to eq(false) }
+      end
+
+      context 'description_what and description_for_who can be nil if description is filled' do
+        let(:procedure) { build(:procedure, description: 'description') }
+        it { expect(procedure.valid?).to eq(true) }
+      end
     end
 
     context 'organisation' do
diff --git a/spec/support/feature_matchers.rb b/spec/support/feature_matchers.rb
index b61c8beee..cf771367f 100644
--- a/spec/support/feature_matchers.rb
+++ b/spec/support/feature_matchers.rb
@@ -5,5 +5,9 @@ module Capybara
     def has_procedure_description?(procedure)
       has_content?(procedure.libelle) && has_content?(procedure.description) && has_content?(procedure.service.email)
     end
+
+    def has_procedure_sumup_description?(procedure)
+      has_content?(procedure.libelle) && has_content?(procedure.service.email)
+    end
   end
 end
diff --git a/spec/system/sessions/sign_in_spec.rb b/spec/system/sessions/sign_in_spec.rb
index c5679805c..4057b6f77 100644
--- a/spec/system/sessions/sign_in_spec.rb
+++ b/spec/system/sessions/sign_in_spec.rb
@@ -43,7 +43,7 @@ describe 'Signin in:' do
       click_on 'Commencer la démarche'
 
       expect(page).to have_current_path identite_dossier_path(user.reload.dossiers.last)
-      expect(page).to have_procedure_description(procedure)
+      expect(page).to have_procedure_sumup_description(procedure)
       expect(page).to have_content "Données d’identité"
     end
   end
diff --git a/spec/system/users/sign_up_spec.rb b/spec/system/users/sign_up_spec.rb
index 9c77cfbac..d6f431d8a 100644
--- a/spec/system/users/sign_up_spec.rb
+++ b/spec/system/users/sign_up_spec.rb
@@ -84,7 +84,7 @@ describe 'Signing up:' do
       click_on 'Commencer la démarche'
 
       expect(page).to have_current_path identite_dossier_path(procedure.reload.dossiers.last)
-      expect(page).to have_procedure_description(procedure)
+      expect(page).to have_procedure_sumup_description(procedure)
     end
   end