diff --git a/whapps/voip/resource/resource.js b/whapps/voip/resource/resource.js
index 1dca88c4..f4ea7967 100644
--- a/whapps/voip/resource/resource.js
+++ b/whapps/voip/resource/resource.js
@@ -198,6 +198,7 @@ winkstart.module('voip', 'resource', {
                         caller_id_options: {
                             type: 'external'
                         },
+                        flags: []
                     }, data_defaults || {}),
                     field_data: {
                         caller_id_options: {