diff --git a/BACKEND/database/migrations/2024_08_06_013033_create_leave_days_table.php b/BACKEND/database/migrations/2024_08_06_013033_create_leave_days_table.php
index 11e2835..d510721 100644
--- a/BACKEND/database/migrations/2024_08_06_013033_create_leave_days_table.php
+++ b/BACKEND/database/migrations/2024_08_06_013033_create_leave_days_table.php
@@ -16,7 +16,7 @@ return new class extends Migration
             $table->integer('ld_user_id'); // Giả định user_id là khóa ngoại
             $table->float('ld_day');
             $table->integer('ld_year');
-            $table->float('ld_date_additional');
+            $table->float('ld_date_additional')->default(0);
             $table->text('ld_note')->nullable();
             $table->timestamps();