diff --git a/monai/losses/sure_loss.py b/monai/losses/sure_loss.py
index 4d83f5f48f..fa8820885d 100644
--- a/monai/losses/sure_loss.py
+++ b/monai/losses/sure_loss.py
@@ -11,7 +11,7 @@
 
 from __future__ import annotations
 
-from typing import Callable, Optional, cast
+from typing import Callable, Optional
 
 import torch
 import torch.nn as nn