diff --git a/app/models/champ.rb b/app/models/champ.rb
index cbff3b54a..92fbca7d0 100644
--- a/app/models/champ.rb
+++ b/app/models/champ.rb
@@ -238,7 +238,7 @@ class Champ < ApplicationRecord
         kopy.write_attribute(:stable_id, original.stable_id)
         kopy.write_attribute(:stream, 'main')
       end
-      ClonePiecesJustificativesService.clone_attachments(original, kopy)
+      ClonePiecesJustificativesService.clone_attachments(original, kopy) if fork || !private?
     end
   end
 
diff --git a/spec/models/champ_spec.rb b/spec/models/champ_spec.rb
index 229b440a4..edde59295 100644
--- a/spec/models/champ_spec.rb
+++ b/spec/models/champ_spec.rb
@@ -569,4 +569,44 @@ describe Champ do
     it { expect(ActionView::RecordIdentifier.dom_id(champ.type_de_champ)).to eq("type_de_champ_#{champ.type_de_champ.id}") }
     it { expect(ActionView::RecordIdentifier.dom_class(champ)).to eq("champ") }
   end
+
+  describe 'clone' do
+    subject { champ.clone(fork) }
+
+    context 'when champ public' do
+      let(:champ) { create(:champ_piece_justificative, private: false) }
+
+      context 'when fork' do
+        let(:fork) { true }
+        it do
+          expect(subject.piece_justificative_file).to be_attached
+        end
+      end
+
+      context 'when not fork' do
+        let(:fork) { false }
+        it do
+          expect(subject.piece_justificative_file).to be_attached
+        end
+      end
+    end
+
+    context 'champ private' do
+      let(:champ) { create(:champ_piece_justificative, private: true) }
+
+      context 'when fork' do
+        let(:fork) { true }
+        it do
+          expect(subject.piece_justificative_file).to be_attached
+        end
+      end
+
+      context 'when not fork' do
+        let(:fork) { false }
+        it do
+          expect(subject.piece_justificative_file).not_to be_attached
+        end
+      end
+    end
+  end
 end