diff --git a/sso/tasks.py b/sso/tasks.py
index 194eca3..3dccee6 100644
--- a/sso/tasks.py
+++ b/sso/tasks.py
@@ -62,6 +62,6 @@ def update_user_access(user):
 def update_service_groups(user_id):
     from sso.models import ServiceAccount
 
-    for service in ServiceAccount.objects.filter(user=user_id, active=True):
-        api = service.api_class
+    for service in ServiceAccount.objects.filter(user=user_id, active=True).select_related('service__api'):
+        api = service.service.api_class
         api.update_groups(service.service_uid, service.user.groups.all())