diff --git a/app/services/expired_dossiers_deletion_service.rb b/app/services/expired_dossiers_deletion_service.rb
index 9e1aec31b..6e0bb1f0d 100644
--- a/app/services/expired_dossiers_deletion_service.rb
+++ b/app/services/expired_dossiers_deletion_service.rb
@@ -117,14 +117,14 @@ class ExpiredDossiersDeletionService
       .group_by(&:user)
       .each do |(user, dossiers)|
         DossierMailer.notify_automatic_deletion_to_user(
-          DeletedDossier.where(dossier_id: dossiers.map(&:id)),
+          DeletedDossier.where(dossier_id: dossiers.map(&:id)).to_a,
           user.email
         ).deliver_later
       end
 
     self.group_by_fonctionnaire_email(dossiers_to_remove).each do |(email, dossiers)|
       DossierMailer.notify_automatic_deletion_to_administration(
-        DeletedDossier.where(dossier_id: dossiers.map(&:id)),
+        DeletedDossier.where(dossier_id: dossiers.map(&:id)).to_a,
         email
       ).deliver_later
 
diff --git a/spec/services/expired_dossiers_deletion_service_spec.rb b/spec/services/expired_dossiers_deletion_service_spec.rb
index 29d89f8ce..6417a0b74 100644
--- a/spec/services/expired_dossiers_deletion_service_spec.rb
+++ b/spec/services/expired_dossiers_deletion_service_spec.rb
@@ -19,8 +19,8 @@ describe ExpiredDossiersDeletionService do
       let!(:valid_brouillon) { create(:dossier, procedure: procedure, created_at: date_not_expired) }
 
       before do
-        allow(DossierMailer).to receive(:notify_brouillon_near_deletion).and_return(double(deliver_later: nil))
-        allow(DossierMailer).to receive(:notify_brouillon_deletion).and_return(double(deliver_later: nil))
+        allow(DossierMailer).to receive(:notify_brouillon_near_deletion).and_call_original
+        allow(DossierMailer).to receive(:notify_brouillon_deletion).and_call_original
 
         ExpiredDossiersDeletionService.process_expired_dossiers_brouillon
       end
@@ -207,8 +207,8 @@ describe ExpiredDossiersDeletionService do
     after  { Timecop.return }
 
     before do
-      allow(DossierMailer).to receive(:notify_automatic_deletion_to_user).and_return(double(deliver_later: nil))
-      allow(DossierMailer).to receive(:notify_automatic_deletion_to_administration).and_return(double(deliver_later: nil))
+      allow(DossierMailer).to receive(:notify_automatic_deletion_to_user).and_call_original
+      allow(DossierMailer).to receive(:notify_automatic_deletion_to_administration).and_call_original
     end
 
     context 'with a single dossier' do
@@ -275,8 +275,8 @@ describe ExpiredDossiersDeletionService do
     after  { Timecop.return }
 
     before do
-      allow(DossierMailer).to receive(:notify_near_deletion_to_user).and_return(double(deliver_later: nil))
-      allow(DossierMailer).to receive(:notify_near_deletion_to_administration).and_return(double(deliver_later: nil))
+      allow(DossierMailer).to receive(:notify_near_deletion_to_user).and_call_original
+      allow(DossierMailer).to receive(:notify_near_deletion_to_administration).and_call_original
     end
 
     context 'with a single dossier' do
@@ -344,8 +344,8 @@ describe ExpiredDossiersDeletionService do
     after  { Timecop.return }
 
     before do
-      allow(DossierMailer).to receive(:notify_automatic_deletion_to_user).and_return(double(deliver_later: nil))
-      allow(DossierMailer).to receive(:notify_automatic_deletion_to_administration).and_return(double(deliver_later: nil))
+      allow(DossierMailer).to receive(:notify_automatic_deletion_to_user).and_call_original
+      allow(DossierMailer).to receive(:notify_automatic_deletion_to_administration).and_call_original
     end
 
     context 'with a single dossier' do