diff --git a/app/models/service.rb b/app/models/service.rb
index 7b4edd599..062893d03 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -16,7 +16,7 @@
 #
 class Service < ApplicationRecord
   has_many :procedures
-  belongs_to :administrateur
+  belongs_to :administrateur, optional: false
 
   scope :ordered, -> { order(nom: :asc) }
 
diff --git a/spec/factories/service.rb b/spec/factories/service.rb
index 889a80240..64dcaa9f9 100644
--- a/spec/factories/service.rb
+++ b/spec/factories/service.rb
@@ -3,10 +3,11 @@ FactoryBot.define do
     nom { 'service' }
     organisme { 'organisme' }
     type_organisme { Service.type_organismes.fetch(:association) }
-    administrateur { create(:administrateur) }
     email { 'email@toto.com' }
     telephone { '1234' }
     horaires { 'de 9 h à 18 h' }
     adresse { 'adresse' }
+
+    association :administrateur
   end
 end