diff --git a/app/models/type_de_champ.rb b/app/models/type_de_champ.rb
index cf2c321d8..5ee6bc037 100644
--- a/app/models/type_de_champ.rb
+++ b/app/models/type_de_champ.rb
@@ -261,7 +261,7 @@ class TypeDeChamp < ApplicationRecord
   end
 
   def check_mandatory
-    if non_fillable?
+    if non_fillable? || private?
       self.mandatory = false
     else
       true
diff --git a/db/migrate/20240619205011_change_types_de_champ_mandatory_default.rb b/db/migrate/20240619205011_change_types_de_champ_mandatory_default.rb
new file mode 100644
index 000000000..31a5f2883
--- /dev/null
+++ b/db/migrate/20240619205011_change_types_de_champ_mandatory_default.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class ChangeTypesDeChampMandatoryDefault < ActiveRecord::Migration[7.0]
+  def change
+    change_column_default :types_de_champ, :mandatory, from: false, to: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 28c317cac..8e70f8121 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2024_05_27_090508) do
+ActiveRecord::Schema[7.0].define(version: 2024_06_19_205011) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_buffercache"
   enable_extension "pg_stat_statements"
@@ -1122,7 +1122,7 @@ ActiveRecord::Schema[7.0].define(version: 2024_05_27_090508) do
     t.datetime "created_at", precision: nil
     t.text "description"
     t.string "libelle"
-    t.boolean "mandatory", default: false
+    t.boolean "mandatory", default: true
     t.jsonb "options"
     t.boolean "private", default: false, null: false
     t.bigint "stable_id"