diff --git a/spec/controllers/administrateurs/procedures_controller_spec.rb b/spec/controllers/administrateurs/procedures_controller_spec.rb
index 72d2484e0..1193b769f 100644
--- a/spec/controllers/administrateurs/procedures_controller_spec.rb
+++ b/spec/controllers/administrateurs/procedures_controller_spec.rb
@@ -91,6 +91,10 @@ describe Administrateurs::ProceduresController, type: :controller do
     let!(:draft_procedure)     { create(:procedure) }
     let!(:published_procedure) { create(:procedure_with_dossiers, :published, dossiers_count: 2) }
     let!(:closed_procedure)    { create(:procedure, :closed) }
+    let!(:procedure_detail_draft)     { ProcedureDetail.new(id: draft_procedure.id, latest_zone_labels: '{ "zone1", "zone2" }') }
+    let!(:procedure_detail_published) { ProcedureDetail.new(id: published_procedure.id, latest_zone_labels: '{ "zone3", "zone4" }') }
+    let!(:procedure_detail_closed)    { ProcedureDetail.new(id: closed_procedure.id, latest_zone_labels: '{ "zone5", "zone6" }') }
+
     subject { get :all }
 
     it { expect(subject.status).to eq(200) }
@@ -116,6 +120,19 @@ describe Administrateurs::ProceduresController, type: :controller do
       expect(assigns(:procedures).any? { |p| p.id == draft_procedure.id }).to be_falsey
     end
 
+    context 'with parsed latest zone labels' do
+      it 'parses the latest zone labels correctly' do
+        expect(procedure_detail_draft.parsed_latest_zone_labels).to eq(["zone1", "zone2"])
+        expect(procedure_detail_published.parsed_latest_zone_labels).to eq(["zone3", "zone4"])
+        expect(procedure_detail_closed.parsed_latest_zone_labels).to eq(["zone5", "zone6"])
+      end
+
+      it 'returns an empty array for invalid JSON' do
+        procedure_detail_draft.latest_zone_labels = '{ invalid json }'
+        expect(procedure_detail_draft.parsed_latest_zone_labels).to eq([])
+      end
+    end
+
     context 'for default admin zones' do
       let(:zone1) { create(:zone) }
       let(:zone2) { create(:zone) }