diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index 485ca86c8..11a2e6e09 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -17,7 +17,7 @@ class Procedure < ApplicationRecord
 
   has_many :assign_to, dependent: :destroy
   has_many :administrateurs_procedures
-  has_many :administrateurs, through: :administrateurs_procedures
+  has_many :administrateurs, through: :administrateurs_procedures, after_remove: -> (procedure, _admin) { procedure.validate! }
   has_many :gestionnaires, through: :assign_to
 
   has_one :initiated_mail, class_name: "Mails::InitiatedMail", dependent: :destroy
@@ -57,6 +57,7 @@ class Procedure < ApplicationRecord
 
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
   validates :description, presence: true, allow_blank: false, allow_nil: false
+  validates :administrateurs, presence: true
   validate :check_juridique
   validates :path, format: { with: /\A[a-z0-9_\-]{3,50}\z/ }, uniqueness: { scope: :aasm_state, case_sensitive: false }, presence: true, allow_blank: false, allow_nil: true
   # FIXME: remove duree_conservation_required flag once all procedures are converted to the new style
diff --git a/spec/models/procedure_spec.rb b/spec/models/procedure_spec.rb
index 6652891bc..c907f88a9 100644
--- a/spec/models/procedure_spec.rb
+++ b/spec/models/procedure_spec.rb
@@ -168,6 +168,10 @@ describe Procedure do
       it { is_expected.to allow_value('URRSAF').for(:organisation) }
     end
 
+    context 'administrateurs' do
+      it { is_expected.not_to allow_value([]).for(:administrateurs) }
+    end
+
     context 'juridique' do
       it { is_expected.not_to allow_value(nil).for(:cadre_juridique) }
       it { is_expected.to allow_value('text').for(:cadre_juridique) }