@@ -1157,7 +1157,9 @@ func (c *Cluster) GetTasks(options apitypes.TaskListOptions) ([]types.Task, erro

 	tasks := []types.Task{}

 	for _, task := range r.Tasks {

-		tasks = append(tasks, convert.TaskFromGRPC(*task))

+		if task.Spec.GetContainer() != nil {

+			tasks = append(tasks, convert.TaskFromGRPC(*task))

+		}

 	}

 	return tasks, nil

 }

@@ -10,6 +10,9 @@ import (

 // TaskFromGRPC converts a grpc Task to a Task.

 func TaskFromGRPC(t swarmapi.Task) types.Task {

+	if t.Spec.GetAttachment() != nil {

+		return types.Task{}

+	}

 	containerConfig := t.Spec.Runtime.(*swarmapi.TaskSpec_Container).Container

 	containerStatus := t.Status.GetContainer()

 	networks := make([]types.NetworkAttachmentConfig, 0, len(t.Spec.Networks))