diff --git a/app/models/safe_mailer.rb b/app/models/safe_mailer.rb
index fbb9f9a8b..b4114e41a 100644
--- a/app/models/safe_mailer.rb
+++ b/app/models/safe_mailer.rb
@@ -12,7 +12,7 @@ class SafeMailer < ApplicationRecord
     raise if SafeMailer.count == 1
   end
 
-  enum forced_delivery_method: Rails.application.config.action_mailer&.balancer_settings&.keys&.map(&:to_s) || []
+  enum forced_delivery_method: (Rails.application.config.action_mailer&.balancer_settings&.keys || []).to_h { |k| [k.to_sym, k.to_s] }
 
   def self.forced_delivery_method
     first&.forced_delivery_method
diff --git a/config/routes.rb b/config/routes.rb
index 1243e43a3..3ae74c592 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -71,7 +71,7 @@ Rails.application.routes.draw do
     resources :outdated_procedures, only: [:index] do
       patch :bulk_update, on: :collection
     end
-    resources :safe_mailers, only: [:index, :edit, :update, :destroy, :new, :create]
+    resources :safe_mailers, only: [:index, :edit, :update, :destroy, :new, :create, :show]
 
     post 'demandes/create_administrateur'
     post 'demandes/refuse_administrateur'