diff --git a/nailgun/entities.py b/nailgun/entities.py
index b4405afa..c49b51cf 100644
--- a/nailgun/entities.py
+++ b/nailgun/entities.py
@@ -227,7 +227,6 @@ def __init__(self, server_config=None, **kwargs):
             ),
             'purpose_usage': entity_fields.StringField(),
             'purpose_role': entity_fields.StringField(),
-            'purpose_addons': entity_fields.ListField(),
             'release_version': entity_fields.StringField(),
             'service_level': entity_fields.StringField(),
             'unlimited_hosts': entity_fields.BooleanField(),