diff --git a/classes/Kohana/Model/Purchase/Item/Promotion.php b/classes/Kohana/Model/Purchase/Item/Promotion.php
index 3de1142..0cf992a 100644
--- a/classes/Kohana/Model/Purchase/Item/Promotion.php
+++ b/classes/Kohana/Model/Purchase/Item/Promotion.php
@@ -15,7 +15,16 @@ public static function initialize(Jam_Meta $meta)
 	{
 		parent::initialize($meta);
 
-		$meta->table('purchase_items');
+		$meta
+			->table('purchase_items')
+			->fields(array(
+				'is_payable' => Jam::field('boolean', array(
+					'default' => TRUE
+				)),
+				'is_discount' => Jam::field('boolean', array(
+					'default' => TRUE
+				)),
+			));
 	}
 
 	public function get_price()
diff --git a/tests/tests/Model/Purchase/Item/PromotionTest.php b/tests/tests/Model/Purchase/Item/PromotionTest.php
index 96ae54b..aac1bbf 100644
--- a/tests/tests/Model/Purchase/Item/PromotionTest.php
+++ b/tests/tests/Model/Purchase/Item/PromotionTest.php
@@ -13,6 +13,8 @@ public function test_initialize()
 	{
 		$meta = Jam::meta('purchase_item_promotion');
 		$this->assertSame('purchase_items', $meta->table());
+		$this->assertTrue($meta->field('is_payable')->default);
+		$this->assertTrue($meta->field('is_discount')->default);
 	}
 
 	/**