diff --git a/atst/domain/task_orders.py b/atst/domain/task_orders.py
index c5d45abd..2836fdbe 100644
--- a/atst/domain/task_orders.py
+++ b/atst/domain/task_orders.py
@@ -7,10 +7,6 @@ from atst.models.task_order import TaskOrder, SORT_ORDERING
 from . import BaseDomainClass
 
 
-class TaskOrderError(Exception):
-    pass
-
-
 class TaskOrders(BaseDomainClass):
     model = TaskOrder
     resource_name = "task_order"