diff --git a/framework/core/src/migrations/2014_01_14_231321_create_discussions_table.php b/framework/core/src/migrations/2014_01_14_231321_create_discussions_table.php
index beec9027b..791ab1aa1 100644
--- a/framework/core/src/migrations/2014_01_14_231321_create_discussions_table.php
+++ b/framework/core/src/migrations/2014_01_14_231321_create_discussions_table.php
@@ -14,8 +14,6 @@ class CreateDiscussionsTable extends Migration {
 	{
 		Schema::create('discussions', function(Blueprint $table)
 		{
-			$table->engine = 'MyISAM';
-
 			$table->increments('id');
 			$table->string('title');
 			$table->integer('comments_count')->unsigned()->default(0);
diff --git a/framework/core/src/migrations/2014_01_14_231350_create_posts_table.php b/framework/core/src/migrations/2014_01_14_231350_create_posts_table.php
index 4d71098c8..f122ae40c 100644
--- a/framework/core/src/migrations/2014_01_14_231350_create_posts_table.php
+++ b/framework/core/src/migrations/2014_01_14_231350_create_posts_table.php
@@ -14,8 +14,6 @@ class CreatePostsTable extends Migration {
 	{
 		Schema::create('posts', function(Blueprint $table)
 		{
-			$table->engine = 'MyISAM';
-
 			$table->increments('id');
 			$table->integer('discussion_id')->unsigned();
 			$table->integer('number')->unsigned()->nullable();
@@ -23,8 +21,8 @@ class CreatePostsTable extends Migration {
 			$table->dateTime('time');
 			$table->integer('user_id')->unsigned()->nullable();
 			$table->string('type')->nullable();
-			$table->text('content');
-			$table->text('content_html');
+			$table->text('content')->nullable();
+			$table->text('content_html')->nullable();
 
 			$table->dateTime('edit_time')->nullable();
 			$table->integer('edit_user_id')->unsigned()->nullable();