diff --git a/app/schemas.py b/app/schemas.py
index e4e78ae2e..4451471b8 100644
--- a/app/schemas.py
+++ b/app/schemas.py
@@ -318,12 +318,10 @@ class DetailedServiceSchema(BaseSchema):
             'broadcast_messages',
             'contact_list',
             'created_by',
-            'created_by',
             'crown',
             'email_branding',
             'email_from',
             'guest_list',
-            'guest_list',
             'inbound_api',
             'inbound_number',
             'inbound_sms',
@@ -344,7 +342,6 @@ class DetailedServiceSchema(BaseSchema):
             'template_statistics',
             'templates',
             'users',
-            'users',
             'version',
         )