diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6b074f7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+App/Config.php
diff --git a/App/Models/Post.php b/App/Models/Post.php
index 2038a2f..03a8d0d 100644
--- a/App/Models/Post.php
+++ b/App/Models/Post.php
@@ -14,7 +14,7 @@ class Post extends \Core\Model
                 'valid_at timestamp NOT NULL DEFAULT "00-00-00 00:00:00"',
                 'expired_at timestamp NOT NULL DEFAULT "00-00-00 00:00:00"',
                 'creator int(3) NOT NULL',
-                'edited_at timestamp',
+                'edited_at timestamp DEFAULT 0',
                 'editor int(3)',
                 'content varchar(255) NOT NULL',
                 'status tinyint(1) NOT NULL DEFAULT 1',
diff --git a/lepisi.sql b/lepisi.sql
index b3daf01..f51d0a7 100644
--- a/lepisi.sql
+++ b/lepisi.sql
@@ -28,7 +28,7 @@ CREATE TABLE `pengumuman` (
   `valid_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
   `expired_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
   `creator` int(3) NOT NULL,
-  `edited_at` timestamp NULL DEFAULT NULL,
+  `edited_at` timestamp DEFAULT 0,
   `editor` int(3) DEFAULT NULL,
   `content` varchar(255) NOT NULL,
   `status` tinyint(1) NOT NULL DEFAULT 1,