diff --git a/app/controllers/new_gestionnaire/dossiers_controller.rb b/app/controllers/new_gestionnaire/dossiers_controller.rb
index 2ae4e52da..2efa419cf 100644
--- a/app/controllers/new_gestionnaire/dossiers_controller.rb
+++ b/app/controllers/new_gestionnaire/dossiers_controller.rb
@@ -136,6 +136,13 @@ module NewGestionnaire
       redirect_to annotations_privees_gestionnaire_dossier_path(procedure, dossier)
     end
 
+    def purge_champ_piece_justificative
+      @champ = dossier.champs_private.find(params[:champ_id])
+      @champ.piece_justificative_file.purge
+
+      flash.notice = 'La pièce jointe a bien été supprimée.'
+    end
+
     def print
       @dossier = dossier
       render layout: "print"
diff --git a/app/views/new_gestionnaire/dossiers/purge_champ_piece_justificative.js.erb b/app/views/new_gestionnaire/dossiers/purge_champ_piece_justificative.js.erb
new file mode 100644
index 000000000..b564293b9
--- /dev/null
+++ b/app/views/new_gestionnaire/dossiers/purge_champ_piece_justificative.js.erb
@@ -0,0 +1,2 @@
+<%= render_flash(timeout: 5000, sticky: true) %>
+<%= remove_element("#piece_justificative_#{@champ.id}") %>
diff --git a/app/views/shared/dossiers/editable_champs/_piece_justificative.html.haml b/app/views/shared/dossiers/editable_champs/_piece_justificative.html.haml
index 1785b68d7..7ba9eb33e 100644
--- a/app/views/shared/dossiers/editable_champs/_piece_justificative.html.haml
+++ b/app/views/shared/dossiers/editable_champs/_piece_justificative.html.haml
@@ -13,7 +13,10 @@
   %div{ id: "piece_justificative_#{champ.id}" }
     = render partial: "shared/champs/piece_justificative/pj_link", locals: { champ: champ, user_can_upload: true }
     %br
-    = link_to 'supprimer', purge_champ_piece_justificative_dossier_path(champ_id: champ.id), remote: true, method: :delete
+    - if champ.private?
+      = link_to 'supprimer', gestionnaire_champ_purge_champ_piece_justificative_path(procedure_id: champ.dossier.procedure_id, dossier_id: champ.dossier_id, champ_id: champ.id), remote: true, method: :delete
+    - else
+      = link_to 'supprimer', purge_champ_piece_justificative_dossier_path(champ_id: champ.id), remote: true, method: :delete
     %br
     Modifier :
   = form.file_field :piece_justificative_file,
diff --git a/config/routes.rb b/config/routes.rb
index 5d8fbbc9b..c2e67ecf8 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -327,6 +327,10 @@ Rails.application.routes.draw do
             post 'send-to-instructeurs' => 'dossiers#send_to_instructeurs'
             post 'avis' => 'dossiers#create_avis'
             get 'print' => 'dossiers#print'
+
+            resources :champs, only: [] do
+              delete 'purge_champ_piece_justificative' => 'dossiers#purge_champ_piece_justificative'
+            end
           end
         end
       end
diff --git a/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb b/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
index 6ebdc7a0e..8221c6491 100644
--- a/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
+++ b/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
@@ -405,4 +405,44 @@ describe NewGestionnaire::DossiersController, type: :controller do
     it { expect(champ_datetime.value).to eq('21/12/2019 13:17') }
     it { expect(response).to redirect_to(annotations_privees_gestionnaire_dossier_path(dossier.procedure, dossier)) }
   end
+
+  describe '#purge_champ_piece_justificative' do
+    before { sign_in(gestionnaire) }
+
+    subject { delete :purge_champ_piece_justificative, params: { procedure_id: champ.dossier.procedure.id, dossier_id: champ.dossier.id, champ_id: champ.id }, format: :js }
+
+    context 'when gestionnaire can process dossier' do
+      let(:champ){ create(:champ_piece_justificative, dossier_id: dossier.id, private: true) }
+
+      it { is_expected.to have_http_status(200) }
+
+      it do
+        subject
+        expect(champ.reload.piece_justificative_file.attached?).to be(false)
+      end
+
+      context 'but champ is not linked to this dossier' do
+        let(:champ){ create(:champ_piece_justificative, dossier: create(:dossier), private: true) }
+
+        it { is_expected.to redirect_to(root_path) }
+
+        it do
+          subject
+          expect(champ.reload.piece_justificative_file.attached?).to be(true)
+        end
+      end
+    end
+
+    context 'when gestionnaire cannot process dossier' do
+      let(:dossier){ create(:dossier, procedure: create(:procedure)) }
+      let(:champ){ create(:champ_piece_justificative, dossier_id: dossier.id, private: true) }
+
+      it { is_expected.to redirect_to(root_path) }
+
+      it do
+        subject
+        expect(champ.reload.piece_justificative_file.attached?).to be(true)
+      end
+    end
+  end
 end