diff --git a/app/models/administrateur.rb b/app/models/administrateur.rb
index de995e2ed..f99d17c98 100644
--- a/app/models/administrateur.rb
+++ b/app/models/administrateur.rb
@@ -139,7 +139,7 @@ class Administrateur < ApplicationRecord
   end
 
   def zones
-    procedures.joins(:zones).flat_map(&:zones).uniq
+    procedures.includes(:zones).flat_map(&:zones).uniq
   end
 
   # required to display feature flags field in manager