diff --git a/api-definitions.go b/api-definitions.go
index 48b886f66..b820490a5 100644
--- a/api-definitions.go
+++ b/api-definitions.go
@@ -25,6 +25,8 @@ const (
 
 // AccessControlPolicyResponse - format for get bucket acl response
 type AccessControlPolicyResponse struct {
+	XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ AccessControlPolicy" json:"-"`
+
 	AccessControlList struct {
 		Grant []Grant
 	}