diff --git a/app/views/layouts/mailer.html.haml b/app/views/layouts/mailer.html.haml
index 28739ee90..5ef091a74 100644
--- a/app/views/layouts/mailer.html.haml
+++ b/app/views/layouts/mailer.html.haml
@@ -1,3 +1,3 @@
-%hmtl
+%html
   %body
-    = yield
\ No newline at end of file
+    = yield
diff --git a/spec/mailers/previews/notification_mailer_preview.rb b/spec/mailers/previews/notification_mailer_preview.rb
index dda299980..f1af33905 100644
--- a/spec/mailers/previews/notification_mailer_preview.rb
+++ b/spec/mailers/previews/notification_mailer_preview.rb
@@ -1,5 +1,11 @@
 class NotificationMailerPreview < ActionMailer::Preview
+
   def dossier_received
     NotificationMailer.dossier_received(Dossier.last)
   end
+
+  def dossier_validated
+    NotificationMailer.dossier_validated(Dossier.last)
+  end
+
 end