diff --git a/cms/plugins/hybrid/classes/datasource/hybrid/field/source/document.php b/cms/plugins/hybrid/classes/datasource/hybrid/field/source/document.php
index a5cf9344e..b7469e459 100644
--- a/cms/plugins/hybrid/classes/datasource/hybrid/field/source/document.php
+++ b/cms/plugins/hybrid/classes/datasource/hybrid/field/source/document.php
@@ -13,7 +13,8 @@ class DataSource_Hybrid_Field_Source_Document extends DataSource_Hybrid_Field_So
 	protected $_props = array(
 		'isreq' => TRUE,
 		'ds_type' => NULL,
-		'one_to_one' => FALSE
+		'one_to_one' => FALSE,
+		'default' => 0
 	);
 	
 	public function booleans()