diff --git a/src/graphnet/models/standard_model.py b/src/graphnet/models/standard_model.py
index b31cce443..8c42ab14d 100644
--- a/src/graphnet/models/standard_model.py
+++ b/src/graphnet/models/standard_model.py
@@ -18,7 +18,7 @@
 from graphnet.models.graphs import GraphDefinition
 from graphnet.models.gnn.gnn import GNN
 from graphnet.models.model import Model
-from graphnet.models.task import Task
+from graphnet.models.task import StandardLearnedTask
 
 
 class StandardModel(Model):
@@ -33,7 +33,7 @@ def __init__(
         *,
         graph_definition: GraphDefinition,
         gnn: GNN,
-        tasks: Union[Task, List[Task]],
+        tasks: Union[StandardLearnedTask, List[StandardLearnedTask]],
         optimizer_class: Type[torch.optim.Optimizer] = Adam,
         optimizer_kwargs: Optional[Dict] = None,
         scheduler_class: Optional[type] = None,
@@ -45,10 +45,10 @@ def __init__(
         super().__init__(name=__name__, class_name=self.__class__.__name__)
 
         # Check(s)
-        if isinstance(tasks, Task):
+        if isinstance(tasks, StandardLearnedTask):
             tasks = [tasks]
         assert isinstance(tasks, (list, tuple))
-        assert all(isinstance(task, Task) for task in tasks)
+        assert all(isinstance(task, StandardLearnedTask) for task in tasks)
         assert isinstance(graph_definition, GraphDefinition)
         assert isinstance(gnn, GNN)