diff --git a/spec/models/dossier_spec.rb b/spec/models/dossier_spec.rb
index 4db38b186..5d0601985 100644
--- a/spec/models/dossier_spec.rb
+++ b/spec/models/dossier_spec.rb
@@ -26,6 +26,12 @@ describe Dossier do
     it { is_expected.to have_one(:entreprise) }
   end
 
+  describe "delegation" do
+    it { is_expected.to delegate_method(:siren).to(:entreprise) }
+    it { is_expected.to delegate_method(:siret).to(:etablissement) }
+    it { is_expected.to delegate_method(:types_piece_jointe).to(:formulaire) }
+  end
+
   let(:dossier) { create(:dossier, :with_entreprise) }
 
   let(:entreprise) { dossier.entreprise }
@@ -33,18 +39,6 @@ describe Dossier do
 
   subject { dossier }
 
-  describe '#siren' do
-    it 'returns entreprise siren' do
-      expect(subject.siren).to eq(entreprise.siren)
-    end
-  end
-
-  describe '#siret' do
-    it 'returns etablissement siret' do
-      expect(subject.siret).to eq(etablissement.siret)
-    end
-  end
-
   describe '#types_piece_jointe' do
     subject { dossier.types_piece_jointe }
     it 'returns list of required piece justificative' do