diff --git a/app/lib/active_storage/downloadable_file.rb b/app/lib/active_storage/downloadable_file.rb
index d2902ebd8..de116e651 100644
--- a/app/lib/active_storage/downloadable_file.rb
+++ b/app/lib/active_storage/downloadable_file.rb
@@ -9,7 +9,7 @@ class ActiveStorage::DownloadableFile
     include_avis_for_expert: false
   )
     PiecesJustificativesService.generate_dossier_export(dossiers, include_infos_administration:, include_avis_for_expert:) +
-      PiecesJustificativesService.liste_documents(dossiers, with_bills:, with_champs_private:)
+      PiecesJustificativesService.liste_documents(dossiers, with_bills:, with_champs_private:, with_avis_piece_justificative: include_infos_administration)
   end
 
   def self.cleanup_list_from_dossier(files)
@@ -79,6 +79,8 @@ class ActiveStorage::DownloadableFile
       'horodatage/'
     when 'Commentaire'
       'messagerie/'
+    when 'Avis'
+      'avis/'
     else
       'pieces_justificatives/'
     end
diff --git a/app/services/pieces_justificatives_service.rb b/app/services/pieces_justificatives_service.rb
index cff6d8548..c3a496755 100644
--- a/app/services/pieces_justificatives_service.rb
+++ b/app/services/pieces_justificatives_service.rb
@@ -1,11 +1,15 @@
 class PiecesJustificativesService
-  def self.liste_documents(dossiers, with_bills:, with_champs_private:)
+  def self.liste_documents(dossiers,
+    with_bills:,
+    with_champs_private:,
+    with_avis_piece_justificative:)
     bill_ids = []
 
     docs = dossiers.in_batches.flat_map do |batch|
       pjs = pjs_for_champs(batch, with_champs_private:) +
         pjs_for_commentaires(batch) +
-        pjs_for_dossier(batch)
+        pjs_for_dossier(batch) +
+        pjs_for_avis(batch, with_avis_piece_justificative:)
 
       if with_bills
         # some bills are shared among operations
@@ -206,6 +210,22 @@ class PiecesJustificativesService
       end
   end
 
+  def self.pjs_for_avis(dossiers, with_avis_piece_justificative:)
+    avis_ids_dossier_id_query = Avis.joins(:dossier)
+      .where(dossier: dossiers)
+    avis_ids_dossier_id_query = avis_ids_dossier_id_query.where(confidentiel: false) if !with_avis_piece_justificative
+    avis_ids_dossier_id = avis_ids_dossier_id_query.pluck(:id, :dossier_id).to_h
+
+    ActiveStorage::Attachment
+      .includes(:blob)
+      .where(record_type: "Avis", name: "piece_justificative_file", record_id: avis_ids_dossier_id.keys)
+      .filter { |a| safe_attachment(a) }
+      .map do |a|
+        dossier_id = avis_ids_dossier_id[a.record_id]
+        ActiveStorage::DownloadableFile.pj_and_path(dossier_id, a)
+      end
+  end
+
   def self.operation_logs_and_signature_ids(dossiers)
     dol_id_dossier_id_bill_id = DossierOperationLog
       .where(dossier: dossiers, data: nil)
diff --git a/spec/services/pieces_justificatives_service_spec.rb b/spec/services/pieces_justificatives_service_spec.rb
index ea6de277f..5555e097e 100644
--- a/spec/services/pieces_justificatives_service_spec.rb
+++ b/spec/services/pieces_justificatives_service_spec.rb
@@ -2,10 +2,11 @@ describe PiecesJustificativesService do
   describe '.liste_documents' do
     let(:with_champs_private) { true }
     let(:with_bills) { true }
+    let(:with_avis_piece_justificative) { true }
 
     subject do
       PiecesJustificativesService
-        .liste_documents(Dossier.where(id: dossier.id), with_bills:, with_champs_private:)
+        .liste_documents(Dossier.where(id: dossier.id), with_bills:, with_champs_private:, with_avis_piece_justificative:)
         .map(&:first)
     end
 
@@ -67,6 +68,50 @@ describe PiecesJustificativesService do
       end
     end
 
+    context 'with avis.piece_justificative being confidentiel' do
+      let(:procedure) { create(:procedure) }
+      let(:dossier) { create(:dossier, procedure: procedure) }
+      let(:avis) { create(:avis, dossier: dossier, confidentiel: true) }
+      let(:with_avis_piece_justificative) { false }
+
+      before do
+        to_be_attached = {
+          io: StringIO.new("toto"),
+          filename: "toto.png",
+          content_type: "image/png",
+          metadata: { virus_scan_result: ActiveStorage::VirusScanner::SAFE }
+        }
+
+        avis.piece_justificative_file.attach(to_be_attached)
+      end
+
+      it "doesn't return confidentiel avis.piece_justificative_file" do
+        expect(subject).to be_empty
+      end
+    end
+
+    context 'with avis.piece_justificative being public' do
+      let(:procedure) { create(:procedure) }
+      let(:dossier) { create(:dossier, procedure: procedure) }
+      let(:avis) { create(:avis, dossier: dossier) }
+      let(:with_avis_piece_justificative) { false }
+
+      before do
+        to_be_attached = {
+          io: StringIO.new("toto"),
+          filename: "toto.png",
+          content_type: "image/png",
+          metadata: { virus_scan_result: ActiveStorage::VirusScanner::SAFE }
+        }
+
+        avis.piece_justificative_file.attach(to_be_attached)
+      end
+
+      it "return avis.piece_justificative_file not confidentiel" do
+        expect(subject).not_to be_empty
+      end
+    end
+
     context 'with a identite champ pj' do
       let(:procedure) { create(:procedure, :with_titre_identite) }
       let(:dossier) { create(:dossier, procedure: procedure) }