diff --git a/db/migrate/20200326120134_add_default_to_en_construction_conservation_extension.rb b/db/migrate/20200326120134_add_default_to_en_construction_conservation_extension.rb
new file mode 100644
index 000000000..8f7a2d520
--- /dev/null
+++ b/db/migrate/20200326120134_add_default_to_en_construction_conservation_extension.rb
@@ -0,0 +1,5 @@
+class AddDefaultToEnConstructionConservationExtension < ActiveRecord::Migration[5.2]
+  def change
+    change_column :dossiers, :en_construction_conservation_extension, :interval, default: 0.days
+  end
+end