diff --git a/core/action.class.inc.php b/core/action.class.inc.php
index 97fb1d2ae..f47c0043b 100644
--- a/core/action.class.inc.php
+++ b/core/action.class.inc.php
@@ -149,7 +149,7 @@ class ActionEmail extends ActionNotification
 
 		MetaModel::Init_AddAttribute(new AttributeEmailAddress("test_recipient", array("allowed_values"=>null, "sql"=>"test_recipient", "default_value"=>"", "is_null_allowed"=>true, "depends_on"=>array())));
 
-		MetaModel::Init_AddAttribute(new AttributeString("from", array("allowed_values"=>null, "sql"=>"from", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeString("from", array("allowed_values"=>null, "sql"=>"from", "default_value"=>null, "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("reply_to", array("allowed_values"=>null, "sql"=>"reply_to", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeOQL("to", array("allowed_values"=>null, "sql"=>"to", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeOQL("cc", array("allowed_values"=>null, "sql"=>"cc", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));