diff --git a/app/assets/javascripts/app/models/ticket.coffee b/app/assets/javascripts/app/models/ticket.coffee
index 2897f6800..87865f956 100644
--- a/app/assets/javascripts/app/models/ticket.coffee
+++ b/app/assets/javascripts/app/models/ticket.coffee
@@ -245,18 +245,18 @@ class App.Ticket extends App.Model
 
     result
 
-  editable: ->
+  editable: (permission = 'change') ->
     user_id = App.Session.get('id')
     return true if user_id is @customer_id
     group_ids = App.Session.get('group_ids')
     if group_ids
-      return true if group_ids[@group_id] && (_.include(group_ids[@group_id], 'change') || _.include(group_ids[@group_id], 'full'))
+      return true if group_ids[@group_id] && (_.include(group_ids[@group_id], permission) || _.include(group_ids[@group_id], 'full'))
     role_ids = App.Session.get('role_ids')
     if role_ids
       for role_id in role_ids
         if App.Role.exists(role_id)
           role = App.Role.find(role_id)
           if role.group_ids
-            return true if role.group_ids[@group_id] && (_.include(role.group_ids[@group_id], 'change') || _.include(role.group_ids[@group_id], 'full'))
+            return true if role.group_ids[@group_id] && (_.include(role.group_ids[@group_id], permission) || _.include(role.group_ids[@group_id], 'full'))
     false