diff --git a/app/controllers/manager/administrateurs_controller.rb b/app/controllers/manager/administrateurs_controller.rb
index 83894c0ab..74bd191ea 100644
--- a/app/controllers/manager/administrateurs_controller.rb
+++ b/app/controllers/manager/administrateurs_controller.rb
@@ -42,7 +42,7 @@ module Manager
       administrateur.dossiers.each(&:delete_and_keep_track)
       administrateur.destroy
 
-      logger.info("L'administrateur #{administrateur.id} est supprimé par #{current_user.id}")
+      logger.info("L'administrateur #{administrateur.id} est supprimé par #{current_administration.id}")
       flash[:notice] = "L'administrateur #{administrateur.id} est supprimé"
 
       redirect_to manager_administrateurs_path
diff --git a/app/models/administrateur.rb b/app/models/administrateur.rb
index 9a9f39174..dffe94034 100644
--- a/app/models/administrateur.rb
+++ b/app/models/administrateur.rb
@@ -8,7 +8,7 @@ class Administrateur < ApplicationRecord
   has_many :services
   has_many :dossiers, -> { state_not_brouillon }, through: :procedures
 
-  has_one :user
+  has_one :user, dependent: :nullify
 
   before_validation -> { sanitize_email(:email) }
 
diff --git a/spec/controllers/manager/administrateurs_controller_spec.rb b/spec/controllers/manager/administrateurs_controller_spec.rb
index f7b9a11e9..0d954ee3c 100644
--- a/spec/controllers/manager/administrateurs_controller_spec.rb
+++ b/spec/controllers/manager/administrateurs_controller_spec.rb
@@ -31,4 +31,18 @@ describe Manager::AdministrateursController, type: :controller do
       it { expect { subject }.to change(Administrateur, :count).by(0) }
     end
   end
+
+  describe '#delete' do
+    let!(:admin) { create(:administrateur) }
+
+    before { sign_in administration }
+
+    subject { delete :delete, params: { id: admin.id } }
+
+    it 'deletes the admin' do
+      subject
+
+      expect(Administrateur.find_by(id: admin.id)).to be_nil
+    end
+  end
 end