diff --git a/nni/algorithms/nas/pytorch/cdarts/utils.py b/nni/algorithms/nas/pytorch/cdarts/utils.py
index 780f6fdc0e..96afa94256 100644
--- a/nni/algorithms/nas/pytorch/cdarts/utils.py
+++ b/nni/algorithms/nas/pytorch/cdarts/utils.py
@@ -58,7 +58,7 @@ def accuracy(output, target, topk=(1,)):
 
     res = []
     for k in topk:
-        correct_k = correct[:k].view(-1).float().sum(0)
+        correct_k = correct[:k].reshape(-1).float().sum(0)
         res.append(correct_k.mul_(1.0 / batch_size))
     return res