diff --git a/install/phpnuxbill.sql b/install/phpnuxbill.sql
index 9b887850..75b27359 100644
--- a/install/phpnuxbill.sql
+++ b/install/phpnuxbill.sql
@@ -72,7 +72,7 @@ DROP TABLE IF EXISTS `tbl_payment_gateway`;
 CREATE TABLE `tbl_payment_gateway` (
   `id` int NOT NULL,
   `username` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
-  `user_id` int(11) NOT NULL,
+  `user_id` int(11) INT NOT NULL DEFAULT 0,
   `gateway` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT 'xendit | midtrans',
   `gateway_trx_id` varchar(512) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '',
   `plan_id` int NOT NULL,
@@ -151,7 +151,7 @@ CREATE TABLE `tbl_transactions` (
   `id` int NOT NULL,
   `invoice` varchar(25) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
   `username` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
-  `user_id` int(11) NOT NULL,
+  `user_id` int(11) INT NOT NULL DEFAULT 0,
   `plan_name` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
   `price` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
   `recharged_on` date NOT NULL,
diff --git a/system/updates.json b/system/updates.json
index 63a1c5a2..6d9fa7a8 100644
--- a/system/updates.json
+++ b/system/updates.json
@@ -176,8 +176,8 @@
         "ALTER TABLE `tbl_customers` ADD `photo` VARCHAR(128) NOT NULL DEFAULT '/user.default.jpg' AFTER `password`;"
     ],
     "2024.12.5": [
-        "ALTER TABLE `tbl_transactions` ADD `user_id` INT(11) NULL AFTER `username`;",
-        "ALTER TABLE `tbl_payment_gateway` ADD `user_id` INT(11) NULL AFTER `username`;"
+        "ALTER TABLE `tbl_transactions` ADD `user_id` INT(11) INT NOT NULL DEFAULT 0, AFTER `username`;",
+        "ALTER TABLE `tbl_payment_gateway` ADD `user_id` INT(11) INT NOT NULL DEFAULT 0, AFTER `username`;"
     ],
     "2024.12.16": [
         "CREATE TABLE `tbl_coupons` ( `id` INT AUTO_INCREMENT PRIMARY KEY, `code` VARCHAR(50) NOT NULL UNIQUE, `type` ENUM('fixed', 'percent') NOT NULL, `value` DECIMAL(10,2) NOT NULL, `description` TEXT NOT NULL, `max_usage` INT NOT NULL DEFAULT 1,`usage_count` INT NOT NULL DEFAULT 0,`status` ENUM('active', 'inactive') NOT NULL, `min_order_amount` DECIMAL(10,2) NOT NULL, `max_discount_amount` DECIMAL(10,2) NOT NULL, `start_date` DATE NOT NULL,`end_date` DATE NOT NULL, `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,`updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP);"