diff --git a/app/mailers/notification_mailer.rb b/app/mailers/notification_mailer.rb
index 3440fd3f8..1df80c127 100644
--- a/app/mailers/notification_mailer.rb
+++ b/app/mailers/notification_mailer.rb
@@ -1,8 +1,7 @@
 class NotificationMailer < ApplicationMailer
   default to: Proc.new { @user.email }
 
-  def send_dossier_received(dossier_id)
-    dossier = Dossier.find(dossier_id)
+  def send_dossier_received(dossier)
     send_notification(dossier, dossier.procedure.received_mail_template)
   end
 
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 9452cc0eb..ef2351dd4 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -323,7 +323,7 @@ class Dossier < ApplicationRecord
 
   def send_dossier_received
     if saved_change_to_state? && en_instruction?
-      NotificationMailer.send_dossier_received(id).deliver_later
+      NotificationMailer.send_dossier_received(self).deliver_later
     end
   end
 
diff --git a/spec/mailers/notification_mailer_spec.rb b/spec/mailers/notification_mailer_spec.rb
index d60fb10a3..37a579fa7 100644
--- a/spec/mailers/notification_mailer_spec.rb
+++ b/spec/mailers/notification_mailer_spec.rb
@@ -38,7 +38,7 @@ RSpec.describe NotificationMailer, type: :mailer do
   end
 
   describe '.send_dossier_received' do
-    subject { described_class.send_dossier_received(dossier.id) }
+    subject { described_class.send_dossier_received(dossier) }
     let(:email_template) { create(:received_mail) }
 
     before do
diff --git a/spec/models/dossier_spec.rb b/spec/models/dossier_spec.rb
index 09501c4d8..924aed3a5 100644
--- a/spec/models/dossier_spec.rb
+++ b/spec/models/dossier_spec.rb
@@ -603,7 +603,7 @@ describe Dossier do
 
     it "sends an email when the dossier becomes en_instruction" do
       dossier.en_instruction!
-      expect(NotificationMailer).to have_received(:send_dossier_received).with(dossier.id)
+      expect(NotificationMailer).to have_received(:send_dossier_received).with(dossier)
     end
 
     it "does not an email when the dossier becomes accepte" do