diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 08d45509a..58a28f96f 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -94,7 +94,7 @@ class UserMailer < ApplicationMailer
 
   def notify_after_closing(user, content, procedure = nil)
     @user = user
-    @subject = "Clôture d'une démarche sur Démarches simplifiées"
+    @subject = "Clôture d'une démarche sur #{Current.application_name}"
     @procedure = procedure
     @content = content
 
diff --git a/spec/mailers/previews/user_mailer_preview.rb b/spec/mailers/previews/user_mailer_preview.rb
index 6fd487fe2..39b285c9c 100644
--- a/spec/mailers/previews/user_mailer_preview.rb
+++ b/spec/mailers/previews/user_mailer_preview.rb
@@ -34,7 +34,7 @@ class UserMailerPreview < ActionMailer::Preview
   end
 
   def notify_after_closing
-    UserMailer.notify_after_closing([user])
+    UserMailer.notify_after_closing(user, "Cette démarche est close")
   end
 
   private
diff --git a/spec/mailers/user_mailer_spec.rb b/spec/mailers/user_mailer_spec.rb
index 50f04f1a8..61eea6d2a 100644
--- a/spec/mailers/user_mailer_spec.rb
+++ b/spec/mailers/user_mailer_spec.rb
@@ -156,7 +156,7 @@ RSpec.describe UserMailer, type: :mailer do
 
     it 'notifies user about procedure closing with detailed message' do
       expect(subject.to).to eq([user.email])
-      expect(subject.body).to include("Clôture d&#39;une démarche sur Démarches simplifiées")
+      expect(subject.body).to include("Clôture d&#39;une démarche sur demarches-simplifiees.fr")
       expect(subject.body).to include("Bonjour,\r\n<br />saut de ligne")
     end